main {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

img {
    width: 100%;
}

img[alt] {
    font-size: 12em;
    color: #000;
    display: block;
}

.lead {
    padding-top: 1em;
}