.game-player {
    width: 1120px;
    height: 630px;
    border: none;
    display: block;
}
body {
    margin: 0;
    background-color: black;
}
.center {
    position: absolute;
    margin: auto;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}