* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: black;
    color: white;
}

.container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#canvas1 {
    border: 5px solid white;
}

.controls {
    display: flex;
}

.controls label {
    width: 100%;
}

.controls input {
    width: 100%;
}