JSFiddle - React, Tailwind, and code Playground

HTML

<div class='wrap'>
  <div class='element'>HELLO</div><div class='element'>WORLD</div>
</div>

CSS

.wrap {
    background-color: red;
    white-space:nowrap;
    width:300px;
}
.element {
    background:#009; color:#cef; text-align:center;
    display:inline-block;
    width:50%;
    border:4px solid rgba(0,0,0,0);
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    background-clip: padding-box;
}