@media all { .hilfeB {  position:absolute;   left: 10px; top: 500px;  width: 800px;  } .hilfe {  position:absolute;  left: 10px; top: 180px;   width: 800px; height: 100%;   background-color: #FFF;   text-align: left; color: #333; font-family: Verdana,sans-serif;  }   #bob {  visibility: hidden;  z-index: 110;  }    #hilfe1 {  visibility: hidden;  z-index: 100; } #hilfe2 {  visibility: hidden;  z-index: 100; } #hilfe3 {  visibility: hidden;  z-index: 100; } }