html,
body {
    height: 100%;
    user-select: none;
}

body {
    margin: 0;
    display: grid;
    place-items: center;
    background: transparent;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    color: #fff;
}

.wrap {
    width: 800px;
}

canvas {
    background: #fff;
    width: 100%;
    height: auto;
    border: 1px solid #e5e5e5;
    box-shadow: 0 6px 24px rgba(0, 0, 0, .06);
}

.hud {
    width: 100%;
    display: flex;
    justify-content: space-between;
    margin: .5rem 0 0;
    font-size: .9rem;
    color: #666;
}

.btns {
    display: flex;
    gap: .5rem;
    align-items: flex-end;
}

button {
    appearance: none;
    border: 1px solid #ddd;
    background: #fff;
    padding: .4rem .6rem;
    border-radius: 10px;
    cursor: pointer;
}

button:active {
    transform: translateY(1px);
}