JSFiddle - React, Tailwind, and code Playground

by Couto

HTML

<div></div>
<div class="full"></div>
<div class="blue"></div>
<div class="full blue"></div>

CSS

div{
    width: 200px;
    height: 30px;
    border: 1px solid #aaa;
}

.full {
    width: 100%;
}

.blue {
    background-color: #55d;
}

.full.blue{
    border: 3px solid red;
    border: expression(this.className =="full blue" ? "3px solid green": "none";);
}