JSFiddle - React, Tailwind, and code Playground

HTML

<a class="scaffolding" href="#">Test this text.</a>

CSS

body {background: black; font-size: 3em;}

@-webkit-keyframes pulse {
    0% { background: #FFF;}
    50% { background: #88B1DA;}
    100% { background: #FFF;}
}

.scaffolding {
    background:    #FFF;
    -webkit-transition: background 1s linear;
}
.scaffolding:hover {
    background:    #88B1DA;
    -webkit-transition: background 1s linear;
    -webkit-animation: pulse 2s linear infinite;
}