<!DOCTYPE html><html><head><metacharset="utf-8"><title>Reference case for text-underline-offset</title><linkrel="stylesheet"type="text/css"href="/fonts/ahem.css"/><style>span{font:20px/1Ahem;color:transparent;writing-mode:vertical-lr;text-decoration:greenunderline;text-decoration-skip-ink:none;text-underline-offset:0;}</style></head><body><div>Test passes if the underline is vertical and close to the word left</div><div>left<span>XXXXX</span></div></body></html>