CSS

Introduction to CSS 

CSS Stands for “Cascading Style Sheet.” Cascading style sheets are used to format the layout of Web pages. They can be used to define text styles, table sizes, and other aspects of Web pages that previously could only be defined in a page’s HTML.

What is CSS?

• CSS stands for Cascading Style Sheets.

• CSS describes how HTML elements are to be displayed on screen, paper, or in other media.

• CSS saves a lot of work. It can control the layout of multiple web pages all at once.

• External stylesheets are stored in CSS files.

Why use CSS?

CSS is used to define styles for your web pages, including the design, layout and variations in display for different devices and screen sizes.

CSS Syntax

The selector points to the HTML element you want to style.

The declaration block contains one or more declarations separated by semicolons.

Each declaration includes a CSS property name and a value, separated by a colon.

Multiple CSS declarations are separated with semicolons, and declaration blocks are surrounded by curly braces.

Example

In this example all <p> elements will be center-aligned, with a red text color:

p {
  color: red;
  text-align: center;
}

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).