Template:Tooltip/sandbox3/styles.css

.template-summary{position:relative;display:inline-block;cursor:pointer;text-decoration:underline;}
.template-details{visibility:hidden;background:#eee;color:#000;padding:0.2em;position:absolute;z-index:99999;border:1px solid;margin:0 0.2em;max-width:50em;}
.template-summary:focus+.template-details{visibility:visible;}
.tooltip-sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px, 0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px;white-space:nowrap;}
body.skin-minerva .template-details{right:0;}