CSS Introduction

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CSS Introduction


CSS is the language we use to style a Web page.

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


CSS Demo - One HTML Page - Multiple Styles!
Here we will show one HTML page displayed with four different stylesheets.
Click on the "Stylesheet 1", "Stylesheet 2", "Stylesheet 3", "Stylesheet 4"
links below to see the different styles:










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 Example

body
{  background-color: lightblue;}
h1
{
  color: white;
  text-align: center;
}
p
{
 
font-family: verdana;
  font-size: 20px;
}
Try it Yourself »

CSS Solved a Big Problem
HTML was NEVER intended to contain tags for formatting a web page!
HTML was
created to describe the content of a web page, like:
<h1>This is a heading</h1>
<p>This is a paragraph.</p>
When tags like <font>, and color attributes were added to the HTML 3.2
specification, it started a nightmare for web developers. Development of large
websites, where fonts and color information were added to every single
page, became a long and expensive process.
To solve this problem, the World Wide Web Consortium (W3C) created CSS.
CSS removed the style formatting from the HTML page!

If you don't know what HTML is, we suggest that you read our HTML Tutorial.


CSS Saves a Lot of Work!
The style definitions are normally saved in external .css files.
With an external stylesheet file, you can change the look of an entire website by changing just one file!












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Reference: https://www.w3schools.com/css/css_intro.asp