how to use classname in css code example
Example 1: how to make a class in html
<ul class="legend">
<li><span class="greendot"></span>Text</li><br></br>
<li><span class="yellowdot"></span>Text</li><br></br>
<li><span class="reddot"></span>Text</li><br></br>
<li><span class="blackdot"></span>Text</li><br></br>
</ul>
Example 2: css class attribute
<h1 class="Class">Content</h1>
<h1 id="id">Content</h1>
Css:
.class
#id