body {
    margin-left: auto;
    margin-right: auto;
    max-width: 70ex;
    padding-left: 2ex;
    padding-right: 2ex;
    line-height: 1.5;
}
h1 {
    font-size: 110%;
    font-weight: bold;
    text-align: center;
}
h2 {
    font-size: 100%;
    font-weight: bold;
    text-align: left;
}
h2:target {
    background-color: #ffa;
}

img {
    border: 0;
}

div.photos {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}
div.photos figure {
    padding-bottom: 2ex;
    margin: 0;
    width: 240px;
}
div.photos img {
    width: 240px;
    height: 180px;
}

footer {
    font-size: 80%;
}