:root {
    --pecan: #e5caac;
    --walnut: #2b2024;
    --cherry: #63453c;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

html {
    background: #fff;
    padding: 2rem;
}

body {
    max-width: 940px;
    font-family: 'Noto Serif', serif;
    font-size: 125%; /* 20 / 16 x 100 */
    line-height: 1.8;
    font-weight: 400;
}

html,
body,
header,
main,
footer {
    display: flex;
    flex-direction: column;
    align-items: center;
}

body,
main,
header,
footer,
.max-width-content {
    flex-grow: 1;
    width: 100%;
}


.max-width-content {
    max-width: 46rem;
}

body,
h1,
h2,
h3,
h4 {
    color: var(--walnut);
}

h1,
h2,
h3,
h4,
p {
    margin: 2rem 0;
}

h1,
h2,
h3,
h4,
strong {
    font-weight: 700;
}

h1 {
    font-size: 2em;
}

h2 {
    font-size: 1.5em;
}

h3 {
    font-size: 1.25em;
}

h4 {
    font-size: 1.125em;
}

a[href] {
    text-decoration: underline;
    cursor: pointer;
    color: var(--cherry);
}

header h1 {
    margin: 0 0 0.5rem;
}

nav {
    display: flex;
    flex-wrap: wrap;
}

nav a[href] {
    padding: 0 1rem 0.5rem;
    margin-right: 2rem;
    text-decoration: none;
}

nav a[href]:hover {
    border-bottom: 4px solid var(--pecan);
}

nav a[href].active {
    border-bottom: 4px solid var(--cherry);
}

nav a:last-child {
    margin-right: 0;
}

img,
iframe {
    border-radius: 8px;
}

img {
    border-radius: 8px;
    max-width: 100%;
    height: auto;
}

.image-list {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.image-list li {
    margin: 2rem 0;
}

.image-list li:first-child {
    margin-top: 0;
}

footer {
    padding: 2rem 0;
    border-top: 1px solid var(--pecan);
}

@media screen and (max-width: 640px) {
    body {
        font-size: 100%;
    }

    nav a[href] {
        margin-right: 0.5rem;
    }
}