body {
    background: linear-gradient(45deg, 
        #ff6b6b, #4ecdc4, #45b7d1, #96ceb4, #feca57, #ff9ff3);
}

.canvas {
    width: 80vmin;
    height: initial;
    aspect-ratio: 1750 / 792;
    border: 1px solid red;
}