JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

CSS

div {
 display: inline-block;
 -webkit-transition: all 1s; 
 -moz-transition: all 1s; 
 -ms-transition: all 1s; 
 -o-transition: all 1s;
 transition: all 1s; 
}

div:hover{
 -webkit-transform: rotate(360deg);
 -moz-transform: rotate(360deg);
 -ms-transform: rotate(360deg);
 -o-transform: rotate(360deg);
 transform: rotate(360deg);    
}

div:before {
 content: '?';
 font-size: 4em;
}