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?
Canvas has several methods for drawing paths, boxes, circles, text, and adding images.
Responsive Web Design
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
Use screen reader utilities to hide elements on all devices except screen readers.
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)
Overflow Use these shorthand utilities for quickly configuring how content overflows an element.
Visibility Control the visibility, without modifying the display, of elements with visibility utilities.
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.