When a browser reads a style sheet, it will format the HTML document according to the information in the style sheet.
Three Ways to Insert CSS
There are three ways of inserting a style sheet:
External CSS
Internal CSS
Inline CSS
External CSS
With an external style sheet, you can change the look of an entire website by changing just one file!
Each HTML page must include a reference to the external style sheet file inside the element, inside the head section.
Example
External styles are defined within the element, inside thesection of an HTML page:
<!DOCTYPE html>
<html>
<head>
<link rel=>"stylesheet" type="text/css" href="mystyle.css">
</head>
<body>
<h1>This is a Heading</h1>
<p>This is a paragraph.</p>
</body>
</html>
An external style sheet can be written in any text editor, and must be saved with a .css extension.
The external .css file should not contain any HTML tags.
Here is how the “mystyle.css” file looks like:
“mystyle.css”
<body {
background-color: lightblue;
}>
<h1 {
color: navy;
margin-left: 20px;
}>
Internal CSS
An internal style sheet may be used if one single HTML page has a unique style.
The internal style is defined inside the