index.css

:root {
	--red: #C5004A;
	--darkred: #7F0036;
	--lightgray: #e0e0e0;
	--gray: #C0C0C0;
	--darkgray: #666;
	--navy: #17050F;
	--blue: #082840;
	--white: #fff;
}
* {
	box-sizing: border-box;
}
html,
body {
	padding: 0;
	margin: 0;
	font-family: sans-serif;
}
p:last-child {
	margin-bottom: 0;
}
p,
.tmpl-post li,
img {
	max-width: 37.5em; /* 600px /16 */
}
p,
.tmpl-post li {
	line-height: 1.45;
}
a[href] {
	color: var(--blue);
}
a[href]:visited {
	color: var(--navy);
}
main {
	padding: 1rem;
}
main :first-child {
	margin-top: 0;
}
header {
	border-bottom: 1px dashed var(--lightgray);
}
header:after {
	content: "";
	display: table;
	clear: both;
}
pre,
code {
	font-family: Consolas, Menlo, Monaco, "Andale Mono WT", "Andale Mono", "Lucida Console", "Lucida Sans Typewriter", "DejaVu Sans Mono", "Bitstream Vera Sans Mono", "Liberation Mono", "Nimbus Mono L", "Courier New", Courier, monospace;
	line-height: 1.5;
}
pre {
	font-size: 14px;
	line-height: 1.375;
	direction: ltr;
	text-align: left;
	white-space: pre;
	word-spacing: normal;
	word-break: normal;
	-moz-tab-size: 2;
	-o-tab-size: 2;
	tab-size: 2;
	-webkit-hyphens: none;
	-moz-hyphens: none;
	-ms-hyphens: none;
	hyphens: none;
	padding: 1em;
	margin: .5em 0;
	background-color: #f6f6f6;
}
.highlight-line {
	padding: 0.125em 1em; /* 2px 16px /16 */
}
.highlight-line-isdir {
	color: #b0b0b0;
	background-color: #222;
}
.highlight-line-active {
	background-color: #444;
	background-color: hsla(0, 0%, 27%, .8);
}
.highlight-line-add {
	background-color: #45844b;
}
.highlight-line-remove {
	background-color: #902f2f;
}

/* Header */
.home {
	padding: 0 1rem;
	float: left;
	margin: 1rem 0; /* 16px /16 */
	font-size: 1em; /* 16px /16 */
}
.home :link:not(:hover) {
	text-decoration: none;
}

/* Nav */
.nav {
	padding: 0;
	list-style: none;
	float: left;
	margin-left: 1em;
}
.nav-item {
	display: inline-block;
	margin-right: 1em;
}
.nav-item a[href]:not(:hover) {
	text-decoration: none;
}
.nav-item-active {
	font-weight: 700;
	text-decoration: underline;
}

/* Posts list */
.postlist {
	list-style: none;
	padding: 0;
}
.postlist-item {
	counter-increment: start-from -1;
}
.postlist-item:before {
	display: inline-block;
	pointer-events: none;
	content: "" counter(start-from, decimal-leading-zero) ". ";
	line-height: 100%;
	text-align: right;
}
.postlist-date,
.postlist-item:before {
	font-size: 0.8125em; /* 13px /16 */
	color: var(--darkgray);
}
.postlist-date {
	word-spacing: -0.5px;
}
.postlist-link {
	display: inline-block;
	padding: 0.25em 0.1875em; /* 4px 3px /16 */
}
.postlist-item-active .postlist-link {
	font-weight: bold;
}
.tmpl-home .postlist-link {
	font-size: 1.1875em; /* 19px /16 */
	font-weight: 700;
}


/* Tags */
.tag {
	display: inline-block;
	vertical-align: text-top;
	text-transform: uppercase;
	font-size: 0.625em; /* 10px /16 */
	padding: 2px 4px;
	margin-left: 0.8em; /* 8px /10 */
	background-color: var(--red);
	color: var(--white);
	border-radius: 0.25em; /* 3px /12 */
}

/* Warning */
.warning {
	background-color: #ffc;
	padding: 1em 0.625em; /* 16px 10px /16 */
}
.warning ol:only-child {
	margin: 0;
}