JSFiddle - React, Tailwind, and code Playground

HTML

<div class="imgs-container">
  <div class="img1">
    <!--<img src="http://www.immobiliaredelcentromodena.com/wp-content/uploads/2017/02/esterno-agenzia.jpg">-->
  </div>
  <div class="img2">
    <!--<img src="http://www.immobiliaredelcentromodena.com/wp-content/uploads/2017/02/interno-agenzia.jpg">-->
  </div>
  <div>

CSS

.imgs-container {
  height: 500px;
}

.img1 {
  float: left;
  width: 30%;
  height: 100%;
  background-image: url("http://www.immobiliaredelcentromodena.com/wp-content/uploads/2017/02/esterno-agenzia.jpg");
  background-repeat: no-repeat;
  background-size: cover;
}

.img2 {
  float: right;
  width: 60%;
  height: 100%;
  background-image: url("http://www.immobiliaredelcentromodena.com/wp-content/uploads/2017/02/interno-agenzia.jpg");
  background-repeat: no-repeat;
  background-size: cover;
}