.battery-footnote-link span{color:transparent;font-size:0;line-height:0}.battery-footnote-link:after{content:attr(data-num);vertical-align:super;font-size:.5em;margin-left:4px;text-decoration:underline;cursor:pointer}.battery-footnote-link.for-big-title:after{position:absolute;top:.3em;line-height:1em;font-size:.3em}