Override child component css from parent angularNov 11, 2017 · Please set parent div to overflow: hidden then in child divs you can set a large amount for padding-bottom. for example padding-bottom: 5000px then margin-bottom: -5000px and then all child divs will be the height of the parent. Continue this thread. level 1. TomaszKula. · 3y. The only thing you can style from the parent component, is the child component's host element. Other that that you only have two options: - expose width and height as @Inputs. - use CSS variables. 0.Nested scss is not working when applied to the child component in angular. Bookmark this question. Show activity on this post. .scss of Parent (applying styles in the parent component) is not getting refeleted. .applyToChild { p { font-size:25px; } ul { li { background-color:blue; } } } Apr 10, 2016 · Overriding a child's CSS is sometimes needed when using a pre-made component from a library, and the devs have not provided any class input variables. ::ng-deep is deprecated and encapsulation: ViewEncapsulation.None turns all of your component's CSS global. So here is a simple solution that uses neither of those. Angular will then take the array passed to ngClass, and apply the CSS classes that it contains to the HTML button element. This is the resulting HTML: This is the resulting HTML: Notice that the CSS classes don't have to be hard-coded in the template using this syntax (its just an example), more on this later.Using component styles. For every Angular component you write, you may define not only an HTML template, but also the CSS styles that go with that template, specifying any selectors, rules, and media queries that you need. One way to do this is to set the styles property in the component metadata.First, mark your child component's encapsulation as shadow so it renders in the actual shadow dom. Second, add the part attribute to the element you wish to allow the parent to style. In your parent's component stylesheet you can use the ::part () method to access. 0. Luminous.Apr 10, 2016 · Overriding a child's CSS is sometimes needed when using a pre-made component from a library, and the devs have not provided any class input variables. ::ng-deep is deprecated and encapsulation: ViewEncapsulation.None turns all of your component's CSS global. So here is a simple solution that uses neither of those. Continue this thread. level 1. TomaszKula. · 3y. The only thing you can style from the parent component, is the child component's host element. Other that that you only have two options: - expose width and height as @Inputs. - use CSS variables. 0.Sep 02, 2019 · The elements are already flex box containers, so within styles.css we just add: If you add the mat-sort-header directive it will add additional CSS classes that will override the above CSS. In this case wrap the header in its own class like this and put the above CSS in the ColumnHeader class: mtn data cheat for 200 nairaEmit Events From Child To Parent Component - Angular. by Arun 19/09/2020. 18/10/2021. A basic example of Angular application to emit the events with the @Output and the @Viewchild decorators. Angular components communicate with each other to pass data. Several angular components can form a hierarchical structure, where data and events get ...Overriding CSS variables from parent component . Published September 8, 2020. there! So, I'm trying to do the following: I have a small component in AngularJs that will render a tag-like unit. I am defining general styles inside it, like colors and borders. They are supposed to be the default values.The child component I call it from different parts, and depending on the part I call it one way or another. This may be a bad practice, but it was a way to fix that problem quickly. If I override the attribute when creating the child component, the binding is no longer done correctly (even if you keep modifying the attribute in the parent ...We have successfully used specificity to override a style using CSS Modules. This pattern of an HTML element sharing classes from two different components is defined as the Adopted Child Pattern by Simurai. What's next? Wanting a parent component to override the styles of a child component turns out to be a common issue in the community.Angular + Typescript Demo Plunk. <script src="https://unpkg.com/[email protected]/c lient/shim.min.js"></script>Otherwise, until an alternative method is proposed by Angular, you can use the ::ng-deep shadow-piercing descendant combinator to modify the child component styling from the parent CSS::host ::ng-deep .parent .child-div { background-color: lime; height: 200px; } See this stackblitz for a demo.Angular + Typescript Demo Plunk. <script src="https://unpkg.com/[email protected]/c lient/shim.min.js"></script>Styling child component from parent in Angular. March, 1, 2021 angular css. Angular provides a modular design that encourages the developer to create separate components with its own logic and styles. This approach has many advantages, but it can cause some problems to solve. In this post, I'd like to show how to solve a problem with styling ...Jan 23, 2019 · <app-child backgroundColor="red"></app-child> See this stackblitz for a demo. Otherwise, until an alternative method is proposed by Angular, you can use the ::ng-deep shadow-piercing descendant combinator to modify the child component styling from the parent CSS::host ::ng-deep .parent .child-div { background-color: lime; height: 200px; } With Angular 4.3.3+, you get access to the parent directive/component via the @Host decorator. So now we can do something like this: And that's all there is to it! Using this approach, we can ...ano ano ang gamit ng wika sa lipunanWhat is CSS-in-JS? “CSS-in-JS” refers to a pattern where CSS is composed using JavaScript instead of defined in external files. Note that this functionality is not a part of React, but provided by third-party libraries. React does not have an opinion about how styles are defined; if in doubt, a good starting point is to define your styles ... Mar 01, 2021 · A new css class is added to the parent component, and based on this class we want to change the styling of the container that's inside it. parent.component.css .parent__container { display : flex ; justify-content : center ; align-items : center ; background-color : peru ; width : 300px ; height : 300px ; } .parent__container.alert .child__container { background-color : darkred ; } “how to override a child element style from parent css” Code Answer’s change parent div css on over of child css by Super Sheep on Mar 15 2021 Comment Nov 05, 2018 · How to change the state of a child component from its parent in React. We will be building a simple React app which shows the real name of a superhero on a button click. Let’s get started. First, we will create a Superhero component with a name attribute in state. This component will render that name first. Nested scss is not working when applied to the child component in angular. Bookmark this question. Show activity on this post. .scss of Parent (applying styles in the parent component) is not getting refeleted. .applyToChild { p { font-size:25px; } ul { li { background-color:blue; } } }Jan 23, 2019 · <app-child backgroundColor="red"></app-child> See this stackblitz for a demo. Otherwise, until an alternative method is proposed by Angular, you can use the ::ng-deep shadow-piercing descendant combinator to modify the child component styling from the parent CSS::host ::ng-deep .parent .child-div { background-color: lime; height: 200px; } Override parent style by a child compoent in Angular (mat-sidenav) Published September 15, 2020 Is there a way to override side-nav content styles in some of the content component.A Parent component should have the ability to overwrite a child components style when both components only have scoped styles. Currently there is no way to overwrite a child components css style with scoped styling. Angular2 has a selecor called /deep/, It would be nice to have a similar feature in Vue. Component styles normally apply only to ...What is CSS-in-JS? “CSS-in-JS” refers to a pattern where CSS is composed using JavaScript instead of defined in external files. Note that this functionality is not a part of React, but provided by third-party libraries. React does not have an opinion about how styles are defined; if in doubt, a good starting point is to define your styles ... Overriding CSS variables from parent component . Published September 8, 2020. there! So, I'm trying to do the following: I have a small component in AngularJs that will render a tag-like unit. I am defining general styles inside it, like colors and borders. They are supposed to be the default values.I have 18 directives all picking apart a very large Object that the parent component is subscribed to (not http). Do I dole out the properties to the different directives or would it be better instead to pass the observable and let the varying components subscribe to only the properties they need.. In short, should I:. Pass an observable to angular2 directives and subscribe from within the ...Override Parent component styles in child component - css - html, I have a Parent component parent.html and it has CSS styles like below .style1{ In Angular (2+), how can I have a child component inherit styles from a parent Component styles not applying in emulated view encapsulation (Angular 5). Using component styleslink. For every Angular component you write, you may define not only an ...See full list on medium.com Oct 24, 2020 · Overriding CSS properties of third-party components in Angular Undoubtedly, making use of a third-party library containing reusable components speeds up application development. iowa child protective servicesWhat is CSS-in-JS? “CSS-in-JS” refers to a pattern where CSS is composed using JavaScript instead of defined in external files. Note that this functionality is not a part of React, but provided by third-party libraries. React does not have an opinion about how styles are defined; if in doubt, a good starting point is to define your styles ... First, mark your child component's encapsulation as shadow so it renders in the actual shadow dom. Second, add the part attribute to the element you wish to allow the parent to style. In your parent's component stylesheet you can use the ::part () method to access. 0. Luminous.Otherwise, until an alternative method is proposed by Angular, you can use the ::ng-deep shadow-piercing descendant combinator to modify the child component styling from the parent CSS::host ::ng-deep .parent .child-div { background-color: lime; height: 200px; } See this stackblitz for a demo.My side nav code below has margin: 20px; which I want to be overridden by only a couple of components loaded into the content section (eg: Map). One way is to remove the margin and apply it across all components individually except the Map. But I was wondering is there a way to go up the style hierarchy and override it from a child component.Override parent style by a child compoent in Angular (mat-sidenav) Published September 15, 2020 Is there a way to override side-nav content styles in some of the content component.An !Important declaration is a great way to override the styles you want. When an important rule is used on a style declaration, this declaration will override any other declarations. When two conflicting declarations with the !important rules are applied to the same element, the declaration with a greater specificity will be applied.For the child, I have overrided and applied custom css by accessing the quasar classes directly in its style tag. The problem is after importing child in parent class, the parents css is applied on child. Even if I use scope,module or deep it has no effect as I want to change the quasar components internal root css.For using bootstrap's JavaScript components, include UI Bootstrap in your project and follow the instructions in it's documentation. i explained simply about badge material ui angular. It consists of a collection of guidelines and principles to design and create user interfaces (UI).The Angular framework makes it straightforward to determine the direction dependency flows through an application, thereby making debugging seamlessly easy. Angular allows dependencies provided through the injector of a parent component to be shared among its child components by injecting them into the constructors of the child components.My side nav code below has margin: 20px; which I want to be overridden by only a couple of components loaded into the content section (eg: Map). One way is to remove the margin and apply it across all components individually except the Map. But I was wondering is there a way to go up the style hierarchy and override it from a child component.Jan 23, 2019 · <app-child backgroundColor="red"></app-child> See this stackblitz for a demo. Otherwise, until an alternative method is proposed by Angular, you can use the ::ng-deep shadow-piercing descendant combinator to modify the child component styling from the parent CSS::host ::ng-deep .parent .child-div { background-color: lime; height: 200px; } Jan 23, 2019 · <app-child backgroundColor="red"></app-child> See this stackblitz for a demo. Otherwise, until an alternative method is proposed by Angular, you can use the ::ng-deep shadow-piercing descendant combinator to modify the child component styling from the parent CSS::host ::ng-deep .parent .child-div { background-color: lime; height: 200px; } I have 18 directives all picking apart a very large Object that the parent component is subscribed to (not http). Do I dole out the properties to the different directives or would it be better instead to pass the observable and let the varying components subscribe to only the properties they need.. In short, should I:. Pass an observable to angular2 directives and subscribe from within the ...tampa arrests last nightAngular 8 - Angular Components and Templates. As we learned earlier, Components are building block of Angular application. The main job of Angular Component is to generate a section of web page called view. Every component will have an associated template and it will be used to generate views. Let us learn the basic concept of component and ... Oct 12, 2017 · Applying CSS Styles To Routable Child Views Using Simulated Encapsulation In Angular 4.4.4. The other day, I mentioned that routable view components, in Angular 4.4.4, don't need to have a defined "selector" property in their @Component () meta-data; but, I did say that including a selector could be helpful for debugging and / or styling the ... Overriding CSS properties of third-party components in Angular Undoubtedly, making use of a third-party library containing reusable components speeds up application development.Apr 29, 2018 · In fact, if you try to style a component that is a child of the component using the parent’s CSS file, it won’t work. This is why we can’t just include the application level CSS in the top level component and instead have to put it in a CSS file that we include in our angular-cli.json file. Application Level JavaScript Oct 07, 2021 · Component/Directive#selector is now a @required property. Angular warns in the console if using Dartium without checked mode. Various performance improvements for both code size and runtime. Various Dart idiomatic/style guide updates to the codebase. ngIf now throws again if the bound value changes during change detection. See full list on medium.com is macau a countryFirst, mark your child component's encapsulation as shadow so it renders in the actual shadow dom. Second, add the part attribute to the element you wish to allow the parent to style. In your parent's component stylesheet you can use the ::part () method to access. 0. Luminous.Mar 05, 2019 · Angular 7 Viewchild & Child Components. We can easily access a child component. We will be able to access instance variables and call methods with ease. In the following example, howAreYou () is a method of a child component. Now are going to call the howAreYou () method inside the AppComponent class. A Parent component should have the ability to overwrite a child components style when both components only have scoped styles. Currently there is no way to overwrite a child components css style with scoped styling. Angular2 has a selecor called /deep/, It would be nice to have a similar feature in Vue. Component styles normally apply only to ...See full list on medium.com See full list on medium.com On this page we will provide Angular OnChanges and SimpleChanges example. Angular provides lifecycle hooks for change detection. The OnChanges is an interface and has a method declaration as ngOnChanges().In parent-child component, the child component declares @Input() property to get values from parent component. Whenever parent component changes the value of properties passed to child ...angular - PrimeNG - breadcrumb - How to update the MenuItem list in the parent component from the child component via a service? - Code Utility [I am learning Angular. In my project I am using PrimeNg. ... Override the default implementation for a single field of a struct using `#[derive(Debug)]` - Code Utility ...Sep 02, 2019 · The elements are already flex box containers, so within styles.css we just add: If you add the mat-sort-header directive it will add additional CSS classes that will override the above CSS. In this case wrap the header in its own class like this and put the above CSS in the ColumnHeader class: Answer #19: let 'parent' be the class-name of parent and 'child' be the class-name of child. .parent .child { //css definition for child inside parent components } you can use this format to define CSS format to 'child' component inside the 'parent'. Answered By: muhammed suhair. Sharing data between child and parent directives and components. Content Projection. Dynamic Components. Angular Elements. Templates. ... './banner-external.component.html', styleUrls: ['./banner-external.component.css']}) ... does not work, see the Override component providers section that explains when and why you must get the service from ...Using component styles. For every Angular component you write, you may define not only an HTML template, but also the CSS styles that go with that template, specifying any selectors, rules, and media queries that you need. One way to do this is to set the styles property in the component metadata.Angular will then take the array passed to ngClass, and apply the CSS classes that it contains to the HTML button element. This is the resulting HTML: This is the resulting HTML: Notice that the CSS classes don't have to be hard-coded in the template using this syntax (its just an example), more on this later.You can use rowDataBound event to hide the icon when there are no records in child grid. To hide the expand/collapse icon in parent row when no records in child grid, follow the given steps: Step 1: Create CSS class with custom style to override the default style of Grid.Nested scss is not working when applied to the child component in angular. Bookmark this question. Show activity on this post. .scss of Parent (applying styles in the parent component) is not getting refeleted. .applyToChild { p { font-size:25px; } ul { li { background-color:blue; } } } I have 18 directives all picking apart a very large Object that the parent component is subscribed to (not http). Do I dole out the properties to the different directives or would it be better instead to pass the observable and let the varying components subscribe to only the properties they need.. In short, should I:. Pass an observable to angular2 directives and subscribe from within the ...css variables are accessible through the shadow dom.. so in your app-parent component scss, you should be able to do something like--child-comp-background: red;Angular - Overriding an attribute doesn't work inside the parent component's html Published March 9, 2022 Why when I create a class extends from another and I try to override an attribute doesn't work as expected?silverline trailers huntsville txSo lets look at the Chrome dev tools and see what the rendered HTML and CSS looks like. By default Angular generates attributes to help scope our CSS class names to our given component. So you can see here all elements inherit the .cmp CSS. Each component's CSS is scoped and overrides our base border color.Nested scss is not working when applied to the child component in angular. Bookmark this question. Show activity on this post. .scss of Parent (applying styles in the parent component) is not getting refeleted. .applyToChild { p { font-size:25px; } ul { li { background-color:blue; } } } Overriding CSS variables from parent component . Published September 8, 2020. there! So, I'm trying to do the following: I have a small component in AngularJs that will render a tag-like unit. I am defining general styles inside it, like colors and borders. They are supposed to be the default values.Styling child component from parent in Angular. March, 1, 2021 angular css. Angular provides a modular design that encourages the developer to create separate components with its own logic and styles. This approach has many advantages, but it can cause some problems to solve. In this post, I'd like to show how to solve a problem with styling ...Angular will then take the array passed to ngClass, and apply the CSS classes that it contains to the HTML button element. This is the resulting HTML: This is the resulting HTML: Notice that the CSS classes don't have to be hard-coded in the template using this syntax (its just an example), more on this later.I have 18 directives all picking apart a very large Object that the parent component is subscribed to (not http). Do I dole out the properties to the different directives or would it be better instead to pass the observable and let the varying components subscribe to only the properties they need.. In short, should I:. Pass an observable to angular2 directives and subscribe from within the ...The directive simply takes an Input property, i.e. customProps, which is an object with the list of props that we need to override. We then override these props using the private method _setProps (). This makes it easy to pass props to any child component from the parent through controller.css variables are accessible through the shadow dom.. so in your app-parent component scss, you should be able to do something like--child-comp-background: red;An !Important declaration is a great way to override the styles you want. When an important rule is used on a style declaration, this declaration will override any other declarations. When two conflicting declarations with the !important rules are applied to the same element, the declaration with a greater specificity will be applied.My side nav code below has margin: 20px; which I want to be overridden by only a couple of components loaded into the content section (eg: Map). One way is to remove the margin and apply it across all components individually except the Map. But I was wondering is there a way to go up the style hierarchy and override it from a child component.Sep 02, 2019 · The elements are already flex box containers, so within styles.css we just add: If you add the mat-sort-header directive it will add additional CSS classes that will override the above CSS. In this case wrap the header in its own class like this and put the above CSS in the ColumnHeader class: Mar 05, 2019 · Angular 7 Viewchild & Child Components. We can easily access a child component. We will be able to access instance variables and call methods with ease. In the following example, howAreYou () is a method of a child component. Now are going to call the howAreYou () method inside the AppComponent class. Hello how are you, I want to make a summary of my work, I started as a full stack in web development with angular and java, I spent 3 years working in backend and front and some devOps, in the 4th year I had a proposal to do only front in angular in another company for a higher amount of money which I accepted, also I hated java and Backend and SQL is satan for me.Nov 05, 2018 · How to change the state of a child component from its parent in React. We will be building a simple React app which shows the real name of a superhero on a button click. Let’s get started. First, we will create a Superhero component with a name attribute in state. This component will render that name first. solo stove cyber mondayNested scss is not working when applied to the child component in angular. Bookmark this question. Show activity on this post. .scss of Parent (applying styles in the parent component) is not getting refeleted. .applyToChild { p { font-size:25px; } ul { li { background-color:blue; } } } In many scenarios you need to share the data between the components. it can be parent to child, child to parent and unrelated components. So let's understand this with the help of an example. Parent To Child Component - any data from parent to child can be shared with the help of @Input decorator. Using component styles. For every Angular component you write, you may define not only an HTML template, but also the CSS styles that go with that template, specifying any selectors, rules, and media queries that you need. One way to do this is to set the styles property in the component metadata.My side nav code below has margin: 20px; which I want to be overridden by only a couple of components loaded into the content section (eg: Map). One way is to remove the margin and apply it across all components individually except the Map. But I was wondering is there a way to go up the style hierarchy and override it from a child component.css variables are accessible through the shadow dom.. so in your app-parent component scss, you should be able to do something like--child-comp-background: red;The Angular framework makes it straightforward to determine the direction dependency flows through an application, thereby making debugging seamlessly easy. Angular allows dependencies provided through the injector of a parent component to be shared among its child components by injecting them into the constructors of the child components.For using bootstrap's JavaScript components, include UI Bootstrap in your project and follow the instructions in it's documentation. i explained simply about badge material ui angular. It consists of a collection of guidelines and principles to design and create user interfaces (UI).<router-outlet > </ router-outlet > With Pageone finished, let's run the app by using the CLI and investigate the functionality:. ng serve Click on one of the buttons and observe that you are directed to the expected page. That's a lot of overhead to encapsulate functionality for a single component so let's extend both the Pagetwo and Pagethree components as well as add buttons to help ...Styling child component from parent in Angular. March, 1, 2021 angular css. Angular provides a modular design that encourages the developer to create separate components with its own logic and styles. This approach has many advantages, but it can cause some problems to solve. In this post, I'd like to show how to solve a problem with styling ...You can use rowDataBound event to hide the icon when there are no records in child grid. To hide the expand/collapse icon in parent row when no records in child grid, follow the given steps: Step 1: Create CSS class with custom style to override the default style of Grid.average salary by age.list-view {.tile {// custom tile styles for the list view here }}.grid-view {.tile {// custom tile styles for the grid view here }} basic CSS stylesheet. In the Angular app, you will most likely have two components that define the view - one will be the list-view-component, and the second one will be the grid-view-component.The tile will be a separate component called a tile-component.::ng-deep selector. Component styles normally apply only to the HTML in the component's own template. Use the ::ng-deep shadow-piercing descendant combinator to force a style down through the child component tree into all the child component views. The ::ng-deep combinator works to any depth of nested components, and it applies to both the view children and content children of the component.Now the parent selector is nothing but the selector of the parent, it means a top element of all inner elements. Basically there is no feature called parent selector. This feature creates a performance issue. How does Parent Selector work in CSS? Even if we don’t have a parent selector feature still we can achieve this requirement in 2 ways. Emit Events From Child To Parent Component - Angular. by Arun 19/09/2020. 18/10/2021. A basic example of Angular application to emit the events with the @Output and the @Viewchild decorators. Angular components communicate with each other to pass data. Several angular components can form a hierarchical structure, where data and events get ...See full list on medium.com Oct 06, 2021 · I have a parent component inside which I have a child component. The parent component have some css classes, where child component extends them. I tried to use :host as looking at documentation, but cant't seem to get it work properly. So lets look at the Chrome dev tools and see what the rendered HTML and CSS looks like. By default Angular generates attributes to help scope our CSS class names to our given component. So you can see here all elements inherit the .cmp CSS. Each component's CSS is scoped and overrides our base border color.It is intended behavior when css encapsulation is enabled to isolate css styles to component on which they are defined, but there should be a way to set child component styles from its parent otherwise it is hard to reuse component in another application or another place in the same application that requires it to look differently.Though Angular components are encapsulated by design, I believe that this kind of CSS may be considered going against the grain of the Angular design philosophy. A more "Angular way" might be to have a parameter on the third-child specifying a mode.could not find method flyway for argumentsNested scss is not working when applied to the child component in angular. Bookmark this question. Show activity on this post. .scss of Parent (applying styles in the parent component) is not getting refeleted. .applyToChild { p { font-size:25px; } ul { li { background-color:blue; } } } Nov 07, 2016 · So if your CSS is not working on child components, do the following: See if the CSS file with the default styles are being loaded on the corresponding page. See if there are any overriding CSS styles that you or any framework you might be using, in the corresponding pages. TL;DR: Yes, it should happen by default. “how to override a child element style from parent css” Code Answer’s change parent div css on over of child css by Super Sheep on Mar 15 2021 Comment We have successfully used specificity to override a style using CSS Modules. This pattern of an HTML element sharing classes from two different components is defined as the Adopted Child Pattern by Simurai. What's next? Wanting a parent component to override the styles of a child component turns out to be a common issue in the community.Hello how are you, I want to make a summary of my work, I started as a full stack in web development with angular and java, I spent 3 years working in backend and front and some devOps, in the 4th year I had a proposal to do only front in angular in another company for a higher amount of money which I accepted, also I hated java and Backend and SQL is satan for me.cdetail.component.ts Here we have used the @Input () directive inside the child component. Now in the child component, the data passed by the parent component can be used. Javascript. Javascript. import { Component, Input, OnInit } from '@angular/core'; @Component ( {. selector: 'app-cdetail',Jul 06, 2021 · Go Deep or Go Home: a Better Way to Affect Descendant Component Styles in Angular By default, Angular uses the emulated encapsulation strategy to make the component styles encapsulated. This means that if we want to override a component style from our parent, we need to use the ::ng-deep selector. First of all, I thought the get() in child will override the parent's get() for the extends, but it didn't. And I can't use the solution in this post, because my child component is dynamic, so i can't declare the @viewchild with specific class type. @ViewChild(ChildCmp) child:ChildCmp; call-child-component-method-from-parent-class-angularWhale! The parent component was able to set the value of the child DOM Element. Using ViewChild with Child Components. ViewChild makes it possible to access a child component and call methods or access instance variables that are available to the child.. Let's say you have a PupComponent.. Ideally, you will use @angular/cli to generate your component:. ng generate component pup --flat --skip ...What is CSS-in-JS? “CSS-in-JS” refers to a pattern where CSS is composed using JavaScript instead of defined in external files. Note that this functionality is not a part of React, but provided by third-party libraries. React does not have an opinion about how styles are defined; if in doubt, a good starting point is to define your styles ... So lets look at the Chrome dev tools and see what the rendered HTML and CSS looks like. By default Angular generates attributes to help scope our CSS class names to our given component. So you can see here all elements inherit the .cmp CSS. Each component's CSS is scoped and overrides our base border color.sylvania tube manual -fc