a:link { color:blue;}
a:visited { color:magenta;}
html,body{position:relative;}
*[hidden]{display:none}
*[hidden].longDesc:target { z-index:99999999;background:lime;display:block;width:100%;height:100%;position:fixed;left:0;bottom:0;right:0;top:0; }
*[hidden]:target ~ * {display:none}
*.img1{border:dashed blue 0px}
*.img2{border:dashed red 0px}