JSFiddle - React, Tailwind, and code Playground

by TCloud

HTML

<div class="box">
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    
    <div class="sidebar"></div>
</div>

CSS

.box {
  display: flex;
  flex-direction: row;
  width: 100%;
  height: 100%;
}

.item {
  width: 100px;
  height: 100px;
  background-color: red;
  display: block;
}

.sidebar {
  flex: 1;
}