<!DOCTYPE html>
<style>
div {
width: 50px;
height: 100px;
border: 1px solid gray;
display: inline-block;
writing-mode: vertical-rl;
}
</style>
<!-- unicode-bidi:plaintext should resolve to LTR, ignoring the direction property -->
<div style="direction:rtl; unicode-bidi:plaintext;">x</div>