#source {
  width: 50%;
  display: block;
  overflow-y: scroll;
  overflow-x: scroll;
  white-space: nowrap;
  position: relative;
  background-color: transparent;

}


#varDrag{
    background-color:lightblue;
    display:none;
    position:absolute;
    top:0px;
    left:0px;
    z-index: 3;
    min-width: 20px;
    font-family: monospace;
    text-align:center;
}

#execution,#plot{
    max-height: 50%;
}

#codeCMenu
{
    width: 200px;
    height: 50px;
    background-color: #f2f2f2;
    z-index: 999;
    position:absolute;
    border-radius: 5px;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}