JSFiddle - React, Tailwind, and code Playground

HTML

<div id='button'>Button</div>

CSS

@font-face
{
  font-family: universLight;
  src: url('http://www.viggi.com/fonts/UniversLTStd-Light.otf');
  font-weight: normal;
  font-style: normal;
}
#button{
    font-family: universLight;
    border: 1px solid black;
    background: #ccc;
}