html {
    min-height: 100vh;
    margin: 0;
}
body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    width: 100%;
    align-items: center;
    margin: 0;
    font-family: monospace;
    font-size: 12px;
}
header {
    margin: 0;
    white-space: pre;
}
div.content {
    width: 100%;
    max-width: 100ch;
    box-sizing: border-box;
    flex-grow: 1;
    margin: 0;
    padding: 0 1ch;
}
footer {
    margin: 2rem 0 1rem;
}

.if-wide {
    display: initial;
}
.if-narrow {
    display: none;
}
@media only screen and (max-width: 36rem) {
    .if-narrow {
        display: initial;
    }
    .if-wide {
        display: none;
    }
}

h1, h2, h3 {
    font-size: 12px;
    font-weight: normal;
}
h1 {
    margin: 1rem 0 1rem;
    white-space: pre;
}
h2, h3 {
    margin: 2rem 0 0;
}
h2 + h3 {
    margin-top: 1rem;
}
h2:before {
    content: "## ";
}
h2:after {
    content: " ##";
}
h3.toc {
    margin-top: 1rem;
}

p, pre, ul, ol {
    margin: 1rem 0 0;
}
p.indent {
    margin: 0;
    text-indent: 2rem;
}
p.nomargin {
    margin: 0;
}

pre {
    white-space: pre-wrap;
    margin-left: 2rem;
}
pre.dates {
    margin: 0 0 2rem;
}
pre.scroll {
    white-space: pre;
    overflow: scroll;
    padding-bottom: 1rem;
}

div.center {
    display: block;
    text-align: center;
    overflow-x: auto;
    padding: 1rem 0;
}
pre.table {
    white-space: pre;
    display: inline-block;
    margin: 0;
}

figure {
    display: table;
    margin: 1rem auto;
}
figcaption {
    display: table-caption;
    caption-side: bottom;
    padding: 0 1rem;
}
img {
    max-width: 100%;
    height: auto;
    border: 1px solid LightGray;
}
figure + p {
    margin: 2rem 0 0;
}

ul {
    position: relative;
    padding-left: 2ch;
    list-style: none;
}
ul li:before {
    content: "-";
    position: absolute;
    left: 0;
}
ul.menu {
    list-style-type: none;
    width: 100%;
    max-width: 72ch;
    margin: 1rem 0 1rem;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}
ul.menu li {
    padding: 0 1rem 0;
}
ul.menu li:before {
    content:"";
}
ul.buttons {
    margin: 2rem 0 0;
    padding-left: 0;
}
h3 + ul.buttons {
    margin-top: 0;
}
li ul.buttons {
    margin-top: 0;
    margin-left: 4ch;
}
ul.buttons li:before {
    content: "";
}
ul.buttons + p {
    margin-top: 2rem;
}

ol.one-digit {
    padding-left: 3ch;
}
ol.two-digits {
    padding-left: 4ch;
}

.para > li {
    margin-bottom: 1rem;
}

a {
    text-decoration-line: none;    
}
a:before {
    content: "<";
}
a:after {
    content: ">";
}