JSFiddle - React, Tailwind, and code Playground

by fristyr

HTML

<button class="btn">button</button>

CSS

.btn {

    font-family: 'OpenSansBold', sans-serif;
    border: 3px solid #31302B;
    font-size: 14px;
    font-weight: bold;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 2px;
    display: inline-block;
    text-align: center;
    cursor: pointer;
    box-shadow: inset 0 0 0 0 #31302B;
	  transition: all ease 0.8s;
}
.btn:hover {
    box-shadow: inset 100px 0 0 0 #e0e0e0;
    color: #fff;
}