#tooltip {
 position: absolute;
 left: -300px;
 width: 150px;
 border: 1px solid black;
 padding: 2px;
 background-color: lightyellow;
 visibility: hidden;
 z-index: 100;
}

#pointer {
 position:absolute;
 left: -300px;
 z-index: 101;
 visibility: hidden;
}