JSFiddle - React, Tailwind, and code Playground

by Vitaliy

HTML

<button class="changeForm">Button</button>

CSS

.changeForm{
    padding:5px;
    background: #333;
    border:1px solid #000;
    transition:all .5s;
    color:#ccc;
}
.changeForm:hover, .changeForm:focus{
    padding:10px;
    background:#141414;
    border-radius:100%;
    color:fff;
    outline:none;
}