body {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    flex-direction: column;
}

h1 {
    text-align: center;
}

footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    text-align: center;
    padding: 10px;
    background-color: #f1f1f1;
}