Use this CSS to display the target of jumps in figures. It is designed for use with images wrapped in jump anchors.

show-jumps.css

figure[id] > a[href^="#"]:after {
    content:attr(href); display:table; 
    position:relative; top:-1.4em; bottom:-1.4em;
    font-weight:bold; text-decoration:none;
    line-height:1; padding:.2em; margin-bottom:-1.4em;
    background:#fff; color:#222;
}