JSFiddle - React, Tailwind, and code Playground

HTML

<div class="test">
    <h2><a href="#">aaaaa</a></h2>
    <h3><a href="#">bbbbb</a></h3>
    <h3><a href="#">ccccc</a></h3>
    <h3><a href="#">ddddd</a></h3>
    <h3><a href="#">eeeee</a></h3>
</div>

CSS

.test h3 a:link{
    color: #f00;
}

/*ついでに*/

.test h3:last-child a:link{
    color: #990;
}