body {
    max-width: 860px;
    font-family: sans-serif;
}

div {
    display: inline-block;
    vertical-align: top;
    margin-right: 2em;
}

div.title {
    display: block;
    align: center;
}

h1 {
    text-align: center;
}

div > img, div > video {
    width: 100%;
}

video + p {
    margin-top: 0.2em;
}

a {
    color: black;
}

@media only screen and (max-width: 480px) {
    body {
        max-width: 480px;
    }
}

@media only screen and (max-width: 320px) {
    body {
        max-width: 320px;
    }
}