ing some CSS below:</p>
	<textarea id="source">@keyframes rotate {
    from { transform: rotate(15deg) }
    to { transform: rotate(375deg) }	
}

.download {
   position: absolute;
   top: 1em;
   left: -1.5em;
   width: 6em;
   height: 6em;
   padding: 1em 0;
   background: #80A060;
   background-image: linear-gradient(90deg, transparent, rgba(10,0,0,.3)),linear-gradient(transparent, transparent);
   color: white;
   line-height: 1;
   font-size: 140%;
   text-align: center;
   text-decoration: initial;
  