body {
    font-family: Arial, Helvetica, sans-serif;
}

a {
    color: steelblue;
}

p {
    line-height: 1.5rem;
}

h1 {
    font-size: 1rem;
    margin-top: 3rem;
    text-align: center;
}

section {
    width: 70ch;
    margin: auto;
}

section.solution {
    display: grid;
    grid-template-columns: 2fr 8fr;
    align-items: center;
}

section.solution>* {
    padding: 0.3rem;
}

input, pre {
    font-size: 1.2rem;
    font-family: monospace;
}