body {
    margin: auto;
    font-size: 1.2rem;
    font-family: Arial, Helvetica, sans-serif;
}

body>* {
    margin: 0.5rem auto;
}

a {
    color: steelblue;
}

h1 {
    width: 100%;
    font-size: medium;
    text-align: center;
}

body>p {
    margin: 1rem auto;
    max-width: 60ch;
}

body>table {
    margin: 1rem auto;
}

p, ul, ol {
    max-width: 35ch;
}

p, li {
    line-height: 1.6rem;
}

pre {
    width: 80ch;
}

.solution-start {
    margin-top: 5rem;
}