JSFiddle - React, Tailwind, and code Playground

HTML

<a href="index.html" class="replies" >
    <span class="replies">Текст</span>
    <span class="comment">Подробней</span>
</a>

CSS

a .comment { display: none; }
a:hover .replies { display: none; }
a:hover .comment { display: inline; }