JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#">это ссылка</a>

CSS

a {
    color: #ff0000;
}

a:hover {
    color: #00ff00;
    -webkit-transition: all 1.5s ease;
       -moz-transition: all 1.5s ease;
        -ms-transition: all 1.5s ease;
         -o-transition: all 1.5s ease;
            transition: all 1.5s ease;
}