JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent">
  <div class="child"></div>
</div>

CSS

.parent{
  border: 1px solid #000;
  height: 500px;
  position: relative;
  width: 500px;
}
.child{
  background: #FF0;
  height: 100px;
  left: 100%;
  position: absolute;
  width: 100px;
  margin-left: -100px;
}