Template:Infobox/styles.css

/* {{pp-template}} */
/* The width style is limited to tablet and desktop resolutions as 22em is bigger than most mobile screens.
Historically, the mobile skin (Minerva) has used !important to override them but this is not sustainable.*/
@media all and ( min-width: 720px ) {
	.infobox {
		width: 22em;
	}
}