JSFiddle - React, Tailwind, and code Playground
by Caleb Wong
HTML
<button><span>Back</span></button>CSS
button { background: -webkit-linear-gradient(top, #858788 0%,#808283 15%,#7b7c7d 23%,#727374 31%,#6c6d6e 38%,#505151 62%,#414142 77%,#383939 87%,#313131 100%); border: none; border-radius: 0 4px 4px 0; float: left; height: 40px; margin: 11px 30px 0 20px; padding: 0 15px 0 10px; }
button:before { content: ' '; border-color: transparent #fff transparent transparent; border-style: solid; border-width: 19px; position: absolute; top: 22px; left: -8px; }
button span { color: #fff; font-size: 15px; font-weight: bold; }
body { padding: 10px; background: #ffd100; }