JSFiddle - React, Tailwind, and code Playground

by mzilverberg

HTML

<a href="javascript:;" class="btn" data-label="Hover over me!">Hover over me!</a>

SCSS

* {
  &,
  &:before,
  &:after {
    box-sizing: border-box;
  }
}

html {
  font: 16px/1.4 Arial, sans-serif;
  color: #000;
}

.btn {
  &,
  &:after {
    position: relative;
    display: inline-block;
    background: #368;
    padding: 1em 2.5em;
    border-radius: 3px;
    color: #fff;
    text-decoration: none;
    transition-property: all;
	  transition-duration: 1.5s;
	  transition-timing-function: cubic-bezier(0, 1, 0.5, 1);
  }
  
  &:after {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    background: #fff;
    color: #368;
    content: attr(data-label);
    height: 0;
    //opacity: 0;
  }
  
  &:hover:after {
    height: 100%;
    //opacity: 1;
  }
}