html {
    line-height: 1.5em;
    font-family: Georgia, Times, "Times New Roman", serif;
    text-rendering: optimizeLegibility;
}

body {
    max-width: 78ch;
    padding: 2em 1em;
    margin: auto;
}

a {
    color: #0040dd;
    text-decoration: none;
    font-weight: bold;
}

a:hover {
    text-decoration: underline;
    text-decoration-thickness: 2px;
}

h1 { font-size: 1.6rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.1rem; }
h4 {font-size: 1rem; }
h1, h2, h3 {
    line-height: 1.5em;
    margin: 2rem auto 1rem;
}

nav {
    margin: 1em auto;
    border-top: 1px solid lightgray;
}

nav > ul {
    display: grid;
    grid-auto-flow: column;
    column-gap: 1em;
    padding-left: 0;
    list-style: none;
    justify-content: start;
}

nav li { 
    grid-column: auto;
    display: inline-block;
}

dl {
    display: grid;
    grid-template-columns: max-content auto;
    row-gap: .5em;
}

dt {
    text-align: right;
    grid-column-start: 1;
}
  
dd {
    grid-column-start: 2;
    margin-left: 1em;
}