JSFiddle - React, Tailwind, and code Playground

HTML

<div class="out">
    <span class="rotated">My ABC</span>
</div>

CSS

.rotated{
    width:10em;
    line-height:2em;
    -moz-transform: rotate(-90deg) translate(-10em);
    -moz-transform-origin:left top 0;
    background:#999;
    white-space:nowrap;
    text-align:center;
    display: inline-block;
} 
.out {
    border: 1px solid red;
    width:2em;
    height:10em;
}