html, body {
    height: 100%;
    margin: 0;
    display: flex;
    flex-direction: column;
}

.body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.main {
    flex: 1;
    display: flex;
    align-items: center; /* Centers vertically */
    justify-content: center; /* Centers horizontally if needed */
}