JSFiddle - React, Tailwind, and code Playground

HTML

<div style="position: relative;">
    <div style="position:absolute; width: 276px; height: 110px; z-index: 2;"/>
      Content here
    </div>
  <img src='http://www.google.com/intl/en_ALL/images/logo.gif' alt="Test Img" style="width: 276px; height: 110px;" />
</div>

CSS

div > div { 
    background: #990000; 
    filter: alpha(opacity=50);
    -moz-opacity: 0.5;
    opacity: 0.5;
}