JSFiddle - React, Tailwind, and code Playground

HTML

<div class="block">
<div class="block2">
<a href="#"><img src="http://kwintotech.com/123.jpg" /></a>
</div>
<a href="#"><h3>Заголовок</h3></a>
</div>

CSS

a{color:#bbb;}
img{width:200px;}

JavaScript

$(document).ready(function(){
    $('.block2 img').hover(function()
    {
        $(this).parent().parent().next('a').css({'color':'#b00'});
    },function()
    {
        $(this).parent().parent().next('a').css({'color':'#bbb'});
    });
});