JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
    <div class="cont">
      <div class="class1">
        </div> 
<div class="class2"></div> </div>  </div>

CSS

body, html {
    height:100%;
width:100%;
}


.wrapper {
    position: relative;
    height: auto;
    width: 90%;
    z-index: 3;
}
.cont {
    background-color: #Fff;
    border: 1px solid #C1C1C1;
    position: relative;
    height: 85px;
    width: 100%;
    margin-bottom: 5px;
}



.class1 {
    height: 85px;
    width: 300px;
    border: 1px solid #000;
    position: relative;
    display: inline;
    left: 10px;
}
.class2 {
    height: 85px;
    width: 300px;
    position: relative;
    display: inline;
    margin-left: 15px;
    background-color: #000;
   border: 1px solid #006;}