body {
    margin: 0 20%;
}

img.preview {
    float: left;
    height: 175px;
    margin-right: 20px;
}

section.block {
    display: inline-block;
}

img.drawing {
    height: 200px;
}

a, u {
    /* Don't underline links */
    text-decoration: none;
}

nav > a {
    margin-right: 10px;
}

div.summaries {
    display: grid;
}

/* For medium screens */
@media screen and (max-width: 1200px) {
    body {
        margin: 20px;
    }
}