* { 
    margin: 0; 
    padding: 0;
}

body, html { 
    height: 100%; 
    overflow: hidden;
    background-color: white;
}

#whiteboard {
    position: absolute;
    left: 10%;
    width: 91%;
    top: 1%;
    height: 98%;
    border: 1px dotted black;
}

.controls {
    position: absolute;
    left: 1%;
    width: 8%;
    top: 1%;
    height: 98%;
    overflow: hidden;
}