body {
    margin: 0px;
    padding: 0px;
    background: #222;
    color: #ddd;
    font-family: monospace;
}

.drawApp {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    grid-auto-rows: minmax(100px, auto);

    position: absolute; 
    top: 0px; 
    right: 0px; 
    bottom: 0px; 
    left: 0px;
    margin: 2em;
}

.drawApp > * > canvas {
    margin: 0 auto;
    display: block;
    height: 100%;
    aspect-ratio: 1/1;   
}

.drawApp > * > canvas:hover {
    cursor: crosshair;
}

.drawApp > .toolbox {
    display: inline-block;
    margin: 0 auto;
    width: 128px;
    padding: 1em;
}


.drawApp > .toolbox > input {
    display: inline-block;
    width: 64px;
    height: 64px;
    font-size: 64px;
}

.drawApp > .toolbox > .button2x {
    width: 128px !important;
    height: 128px !important;    
}

.drawApp > .toolbox > .color {
    display: inline-block;
    width: 64px;
    height: 64px;
}

.drawApp > * > .footer {
    display: block;
    text-align: center;
}

#errorBox {
    border: thick solid #990000;
    background: #dd0000;
    position: fixed;
    bottom: 0px;
    right: 0px;
    text-align: center;
    padding: 1em;
    font-size: x-large;
}

.visible {
    display: block;
}

.invisible {
    display: none;
}