External style sheet
●Create a text file containing the style declarations.
–File should have extension “.css” such as: mystyle.css
●Link, or import that file to the HTML file using special tags in the header.
<link href=“URL” rel=“stylesheet” type=“text/css”>
<style>
@import url(“mystyle.css”)
</style>
Rectangular Callout: mystyle.css
mystyle.css
@import or multiple LINK tags allow you to use more than one style sheet in the same document
OR
The LINK tag’s attributes tell the browser to find an external style sheet, that the style sheet is a CSS file, and that the name of that file is mystyle.css ( DON’T FORGET THE RELATIVE PATH!)

USER DEFINED STYLES:
Tools>Internet Options>Accessibility>Check user style sheet, and provide name