Bản mẫu:Screen reader-only/styles.css

/*This implementation is fromhttps://cloudfour.com/thinks/see-no-evil-hidden-content-and-accessibility/#showing-additional-content-for-screen-readerswhich is a slight tweak from https://accessibility.18f.gov/hidden-content/ .https://webaim.org/techniques/css/invisiblecontent/#techniqueshas slightly different CSS clip, rect (1px) for all dimensions.WARNING:Template:Fraction and friends use this styles.css page and class directly ratherthan going through the template.*//* We retain .sr-only as the class name because it's used by the outside world. */.sr-only {	border: 0;	clip: rect(0, 0, 0, 0); /* Removed from CSS specification */	/* clip-path is the replacement for clip, but very few browsers support it. */	clip-path: polygon(0px 0px, 0px 0px, 0px 0px);	height: 1px;	margin: -1px;	overflow: hidden;	padding: 0;	position: absolute;	width: 1px;	white-space: nowrap;}