There are three ways of inserting a style sheet: External CSS; Internal CSS; Inline CSS. External CSS.
<ol>
<li>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 &lt;link&gt; element, inside the head section.
</li>
<li>An external style sheet can be written in any text editor , and must be saved with a .css extension.
</li>
<li>An internal style sheet may be used if one single HTML page has a unique style.
The internal style is defined inside the &lt;style&gt; element, inside the head section.
</li>
</ol>

There are three ways of inserting a style sheet: ***External CSS***; ***Internal CSS***; ***Inline CSS***. ***External CSS.***

1.  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 &lt;link&gt; element, inside the head section.
    
2.  An external style sheet can be written in any text editor , and must be saved with a .css extension.
    
3.  An internal style sheet may be used if one single HTML page has a unique style.
    
    The internal style is defined inside the &lt;style&gt; element, inside the head section.

CSS Type