.canvas-bgrd {
    width:400px;
    max-width: 100%;
    height: 100px;
    margin-bottom: 1rem;
}

canvas#signCanvas {
    width: 100%;
    height: 100%;
    background-color: lightblue;
}

canvas#signCanvas2 {
    width: 100%;
    height: 100%;
    background-color: lightblue;
}