JSFiddle - React, Tailwind, and code Playground

HTML

<div class="element">
<div class="element icon-one"></div>
<div class="icon-two element"></div>

</div>

CSS

.element {
  background-color: blue;
  height: 50px;
  margin: 10px;
  width: 50px;
}

.element[class^='icon-'],
.element[class*=' icon-'] {
  background-color: red;
}