#canvas-dolphin {
    box-sizing: content-box;
    border-radius: 6px;
    border: black 2px solid;
    width: 100%;
    max-width: 640px;
    aspect-ratio: 16 / 9;
    height: auto;
    display: block;
}

@media screen and (max-width: 900px) and (orientation: landscape) {
    #canvas-dolphin {
        height: 80vh;
        width: auto;
        max-width: none;
    }
}