JSFiddle - React, Tailwind, and code Playground

HTML

<div class="owl-item">first</div>
<div class="owl-item active">second</div>
<div class="owl-item active">third</div>
<div class="owl-item">fourth</div>

CSS

.owl-item {
  background-color:green;
  height:50px;
  width:50px;
  display:inline-block;
}
.owl-item.active + .owl-item {
  background-color:red;
}