JSFiddle - React, Tailwind, and code Playground

HTML

<div class="div1"></div>
<div class="div2"></div>
<div class="div3"></div>
<div class="div4"></div>

CSS

[class*="div"] {
    margin: 10px auto;
    width: 50px;
    height: 30px;
    border: 4px double; 
}
.div1 {color: red;}
.div2 {color: ;}
.div3 {color: green;}
.div4 {color: silver;}