.stretch {
    display: flex;
    margin: 0 auto;
    flex-direction: column;
    height: 100vh;
    align-content: center;
    justify-content: center;
}

.header {
    flex-grow: 0;
    text-align: center;
    padding-top: 1em;
    padding-bottom: 1em;
}

.middle {
    flex-grow: 1;
}

.footer {
    flex-grow: 0;
    background: #222;
    color: white;
    text-align: center;
    padding-top: 0.25em;
    padding-bottom: 0.25em;
}

body {
    background: #FDF7DD;
}