JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
  <div class="box">
    <input type="text">
  </div>
  <div class="box">
    <input type="text">
  </div>
  <div class="box">
    <input type="text">
  </div>
  <div class="box">
    <input type="text">
  </div>
</div>

CSS

.container {
  display: flex;  
  justify-content: space-between;
}

.box { 
  padding: 0 10px;
}

.box input { 
  width: 100%;
}