Inline Inclusion In CSS, inline inclusion is a technique to insert CSS code inside an HTML page. In this technique, we write all CSS attribute with their value separated by a semicolon ( ; ) within the style value, see below example
<p style="color:green; font-size:17px;">This paragraph is styled by inline CSS inclusion</p>
In the above example I've written inline CSS within <p> tag, style property is used to insert a inline CSS in HTML tag.
Note - All CSS attribute must be separated with a semicolon ( ; ), let's see some more examples-
<h1 style="padding:10px; font-size:25px;">Inline CSS Inclusion</h1>
<div style="width:100%; height:120px; background-color:aqua;"></div>
Note - Inline CSS is most periorty CSS inclusion technique.