firefox/layout/reftests/forms/progress/progress-vlr-orient-horizontal.html

<!DOCTYPE html>
<html>
<progress style="writing-mode:vertical-lr;-moz-orient:horizontal" max=100 value=0>
	`<!DOCTYPE html>`
	`<html>`
	`<progress style="writing-mode:vertical-lr;-moz-orient:horizontal" max=100 value=0>`