JSFiddle - React, Tailwind, and code Playground

by ruisoftware

HTML

<div id="b">
1234<br />
4567
</div>
    <div id="a">
</div>

CSS

#a {
    
    border: 1px blue solid;
    width: 20px;
    height: 20px;
    /* Safari 4-5, Chrome 1-9 */
    xxbackground: rgba(255, 255, 255, 0.9);
  background: -webkit-gradient(linear, left top, right top, from(rgba(255, 255, 255, 1)), color-stop(0.5, rgba(255, 255, 255, 0.7)), to(rgba(67, 67, 67, 0.9)));

    opacity: 0.7;
    z-index: 2;
        margin-top: -20px;
}

#b {
width: 20px;
    height: 20px;
    z-index: 1;
opacity: 1;

}