* {
    padding: 10;
    margin: 10;
    font-family: Arial, Helvetica, sans-serif;
    background-color: #777777;
    height: 80%;
    
}

.canvas {

    border: 1px solid;
    background-color : #4D4D4D;
}

.start{
    background-color: #828282;
    height: auto;
}

.stop{
    background-color: #828282;
    height: auto;
}

.container {
    height: auto;
}