html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100vh;
    background: linear-gradient(to right, yellow 0%, orange 50%, yellow 100%);
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #333;
}