<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
html {
	font-family: monospace;
}
body {
	max-width: 104ch;
	margin: auto;
	padding: 0 1ch;
}

nav ul {
	padding: 0;
	list-style-type: none;
	display: flex;
	flex-wrap: wrap;
}
nav ul li {
	margin-right: 1.5ch;
}

main.index ol {
	list-style-type: none;
	padding: 0;
}
main.index ol li {
	margin: 1em 0;
}
main.index h2 {
	font-size: 1em;
	margin: 0;
}
main.index data.replies, main.index time {
	display: block;
}
main.index data.replies[value="0"] {
	display: none;
}
main.index data.replies::before {
	content: '+';
}

article.message header {
	background-color: gainsboro;
	padding: 1ex 1ch;
}
article.message:target header {
	background-color: khaki;
}
article.message header h2 {
	font-size: 1em;
	margin: 0;
}
article.message header nav ul {
	margin: 0;
}

address {
	display: inline;
	font-style: inherit;
}
ul.recipient {
	margin: 0;
	padding: 0;
	list-style-type: none;
	display: flex;
	flex-wrap: wrap;
}
ul.recipient li:not(:last-child)::after {
	content: ', ';
	margin-right: 1ch;
}
ul.recipient li.group > address::after {
	content: ': ';
}
ul.recipient li.group::after {
	content: '; ';
	margin-right: 1ch;
}
address.from::before {
	content: 'From: ';
}
ul.to::before {
	content: 'To: ';
	margin-right: 1ch;
}
ul.cc::before {
	content: 'Cc: ';
	margin-right: 1ch;
}

pre {
	white-space: pre-wrap;
}
pre q::before, pre q::after {
	content: none;
}
pre q {
	color: navy;
}
pre q q {
	color: teal;
}
pre q q q {
	color: purple;
}
pre del {
	text-decoration: none;
	color: red;
}
pre ins {
	text-decoration: none;
	color: green;
}

ul.attachment {
	background-color: gainsboro;
	padding-top: 1ex;
	padding-bottom: 1ex;
	list-style-type: square;
}

details.subthread, article.message > article.message {
	border-left: 2px solid gainsboro;
	padding-left: 1ch;
}
details.subthread summary {
	margin: 1em 0;
}

footer {
	margin: 1em 0;
	text-align: center;
	color: gray;
}
</style>