*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    background: black;
}
#canvas{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 5px solid white;
    max-width: 100%;
    max-height: 100%;
}
#images{
    display: none;
}