body {position: relative}body:after {content: ""; opacity: 0.5; top: 0; left: 0; bottom: 0; right: 0; position: absolute; z-index: -1; background: url("<!--{$link|escape:'html'}-->"); opacitybackground-size: contain; background-attachment: fixed; background-repeat: no-repeat; background-position: 0.5left top}#mw-content-text {opacity: 0.758}