.content {
    width: 600px;
    background-color: #100f1f;
    padding: 14px;
    margin: 0 auto 0 auto;
    position: relative;
    overflow: auto;
}
body {
    background-image: url("https://saintoratorio.neocities.org/images/MC1.png");
    background-color: #100f1f;
    color: #d2d2d8;
    background-repeat: no-repeat;
    background-position: right 0% bottom 100%;
    background-attachment: fixed;
    background-size: cover;
}
.centering {
    display: block;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}