JSFiddle - React, Tailwind, and code Playground

HTML

<div class="windowBorder" >
    <div class="windowContent" >
       <div >xxxxxxxxxxxxxxx</div>
       <div >xxxxxxxxxxxxxxx</div>
       <div >xxxxxxxxxxxxxxx</div>
       <div >xxxxxxxxxxxxxxx</div>							
    </div>        
</div>

CSS

.windowBorder{
  margin: 30px;  
  padding: 20px 8px 8px 8px;  
  box-shadow: 2px 2px 5px 1px #111111;
  border-radius: 10px;
background: #7d7e7d; /* Old browsers */
background: -moz-linear-gradient(top, #7d7e7d 0%, #0e0e0e 13%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#7d7e7d), color-stop(13%,#0e0e0e)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #7d7e7d 0%,#0e0e0e 13%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #7d7e7d 0%,#0e0e0e 13%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #7d7e7d 0%,#0e0e0e 13%); /* IE10+ */
background: linear-gradient(to bottom, #7d7e7d 0%,#0e0e0e 13%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#7d7e7d', endColorstr='#0e0e0e',GradientType=0 ); /* IE6-9 */
}

.windowContent {    
   padding: 10px;
   background-color: white;   
}