JSFiddle - React, Tailwind, and code Playground

by adamschwartz

HTML

<div class="box"></div>

CSS

.box {
    height: 100px;
    width: 100px;
    background: #000;
    background: rgba(0, 0, 0, .4);
}

.box {
    filter: alpha(opacity=50); /* IE 5–7 */
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)"; /* IE 8 */
}