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JavaScript

JavaScript makes HTML pages more dynamic and interactive.


Entities

HTML Entities Some characters are reserved in HTML.
If you use the less than or greater than signs in your text, the browser might mix them with tags.
Character entities are used to display reserved characters in HTML.
A character entity looks like this: 0220439815


What is Canvas?

The HTML canvas element is used to draw graphics, on the fly, via JavaScript.
The canvas element is only a container for graphics. You must use JavaScript to actually draw the graphics.
Canvas has several methods for drawing paths, boxes, circles, text, and adding images.


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Responsive Web Design

Responsive web design makes your web page look good on all devices. Responsive web design uses only HTML and CSS. Responsive web design is not a program or a JavaScript.


Cards

A card is a flexible and extensible content container. It includes options for headers and footers, a wide variety of content, contextual background colors, and powerful display options. If you’re familiar with Bootstrap 3, cards replace our old panels, wells, and thumbnails. Similar functionality to those components is available as modifier classes for cards. 0220439815


Screen readers

Use screen reader utilities to hide elements on all devices except screen readers.


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Related Content

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CSS Selectors CSS selectors are used to "find" (or select) the HTML elements you want to style.
We can divide CSS selectors into five categories:
Simple selectors (select elements based on name, id, class)
Combinator selectors (select elements based on a specific relationship between them)
Pseudo-class selectors (select elements based on a certain state)
Pseudo-elements selectors (select and style a part of an element)
Attribute selectors (select elements based on an attribute or attribute value)

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Responsive Web Design Responsive web design makes your web page look good on all devices. Responsive web design uses only HTML and CSS. Responsive web design is not a program or a JavaScript.

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Overflow Use these shorthand utilities for quickly configuring how content overflows an element.

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Visibility Control the visibility, without modifying the display, of elements with visibility utilities.

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Navbar Documentation and examples for Bootstrap’s powerful, responsive navigation header, the navbar. Includes support for branding, navigation, and more, including support for our collapse plugin.

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Collapse Toggle the visibility of content across your project with a few classes and our JavaScript plugins.