header {
    height: auto
}
body {
    height: auto;
    margin: 5%;
    padding: 5%;
    background-color: cyan;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}
footer {
    -webkit-text-fill-color: red;
    font-size: xx-large;
    text-shadow: 0.5em, 0.5em, 1em, black;
    font-family: 'Comic Sans MS', 'Comic Sans', sans-serif;
}
img {
    max-width: 100%;
    max-height: 100%;
}