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

body {
    background: linear-gradient(135deg, #012d5a 0%, #013d7a 50%, #0a5298 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}