body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100vh;
    background-color: #F2F2F7;
}

@media (prefers-color-scheme: dark) {
    body {
        background-color: #1C1C1F;
    }
}

.center {
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%);
}