JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#">это ссылка</a>

CSS

a {
    color: #ff0000;
    -webkit-transition: all 3.5s ease;
    -moz-transition: all 3.5s ease;
    -ms-transition: all 3.5s ease;
    -o-transition: all 3.5s ease;
    transition: all 3.5s ease;
}

a:hover {
    color: #00ff00;
}