JSFiddle - React, Tailwind, and code Playground

HTML

<div class="one">наведи</div>

CSS

.one{
    border: 5px solid #ccc;
    float: left;
    margin: 15px;
    -webkit-transition: margin 0.5s ease-out;
    -moz-transition: margin 0.5s ease-out;
    -o-transition: margin 0.5s ease-out;
}
 
.one:hover {
    margin-top: 20px;
}