using class in html code example
Example 1: class html
<p class="ThisIsAClassName">HI</p>
Example 2: html classes
<p class="ClassExample">ClassExample!!</p>
Example 3: html specific class color
<!-- in the head element -->
<style> h1 { color:blue; } </style>
<!-- in the body element -->
<h1> text in blue because all "h1" element is in blue </h1>