JSFiddle - React, Tailwind, and code Playground

by Zoxon

HTML

<a href="#">Ссылка</a>

CSS

a {
    color: #e74c3c;
    position: relative;
    text-decoration: none;
}

a:before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: #ffa79e;
    
}