<div class="flex">W3TR</div>
.flex{
    width: 200px;
    height: 200px;
    display: -webkit-flex; /* Safari */
    -webkit-flex-direction: row-reverse; /* Safari 6.1+ */
    display: flex;
    flex-direction: row-reverse;
    background: red;
    color: white;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.