* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	font-family: monospace;
	font-size: 12px;
	line-height: 1.5;
	color: #000;
	background-color: #fff;
	max-width: 80ch;
	margin: 0 auto;
	padding: 1rem;
}

[pre] {
	white-space: pre-line
}

h1,
h2,
h3,
h4,
h5,
h6 {
	font-weight: bold;
	margin-top: 1.5em;
	margin-bottom: 0.5em;
	background-image: repeating-linear-gradient(
		270deg,
		#333333,
		#333333 11px,
		transparent 11px,
		transparent 13px,
		#333333 13px
	);
	background-size: 100% 1.5px;
	background-position: -5px 90%;
	background-repeat: no-repeat;
}

h1 {
	font-size: 1.5em;
}
h2 {
	font-size: 1.4em;
}
h3 {
	font-size: 1.3em;
}
h4 {
	font-size: 1.25em;
}
h5,
h6 {
	font-size: 1.1em;
}

p {
	margin-bottom: 1em;
}

a {
	color: #000;
	text-underline-offset: 1.5px;
	text-decoration: underline dotted;
}

a:hover {
	background-color: #eee;
}

em,
i {
	font-style: italic;
}

strong,
b {
	font-weight: bold;
}

code,
pre,
samp {
	font-family: monospace;
	background-color: #f8f8f8;
	border: 1px solid #ccc;
	padding: 0.2em 0.4em;
	border-radius: 3px;
}

pre {
	overflow-x: auto;
	padding: 1em;
	margin-bottom: 1em;
}

blockquote {
	margin: 1em 0;
	padding-left: 1em;
	border-left: 4px solid #ccc;
	color: #555;
}

hr {
	border: none;
	height: 1px;
	background-image: repeating-linear-gradient(
		270deg,
		#333333,
		#333333 11px,
		transparent 11px,
		transparent 13px,
		#333333 13px
	);
	background-size: 100% 1px;
	background-position: -5px 90%;
	background-repeat: no-repeat;
	margin: 2em 0;
}

ul,
ol {
	margin-bottom: 1em;
	padding-left: 2em;
}

ul li {
	list-style-type: disc;
}
ol li {
	list-style-type: decimal;
}

dl {
	margin-bottom: 1em;
}

dt {
	font-weight: bold;
	margin-top: 0.25em;
}

dd {
	margin-left: 2em;
	margin-bottom: 0.25em;
}

table {
	border-collapse: collapse;
	margin-bottom: 1em;
	width: 100%;
}

th,
td {
	border: 1px solid #ccc;
	padding: 0.5em;
	text-align: left;
}

th {
	background-color: #f0f0f0;
}

img {
	max-width: 100%;
	height: auto;
	display: block;
	margin: 0 auto;
}

figure {
	margin: 1em 0;
	padding: 1em;
	background-image:
		repeating-linear-gradient(
			0deg,
			#333333,
			#333333 11px,
			transparent 11px,
			transparent 13px,
			#333333 13px
		),
		repeating-linear-gradient(
			90deg,
			#333333,
			#333333 11px,
			transparent 11px,
			transparent 13px,
			#333333 13px
		),
		repeating-linear-gradient(
			180deg,
			#333333,
			#333333 11px,
			transparent 11px,
			transparent 13px,
			#333333 13px
		),
		repeating-linear-gradient(
			270deg,
			#333333,
			#333333 11px,
			transparent 11px,
			transparent 13px,
			#333333 13px
		);
	background-size:
		1.5px 100%,
		100% 1.5px,
		1.5px 100%,
		100% 1.5px;
	background-position:
		0 0,
		0 0,
		100% 0,
		0 100%;
	background-repeat: no-repeat;
	background-color: #f8f8f8;
	text-align: center;
}

figcaption {
	font-style: italic;
	margin-top: 0.5em;
	color: #555;
}

kbd {
	background-color: #eee;
	border: 1px solid #ccc;
	border-bottom: 2px solid #bbb;
	border-radius: 3px;
	padding: 0.2em 0.4em;
	font-family: monospace;
	box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}

article {
	position: relative;
	background-image:
		repeating-linear-gradient(
			0deg,
			#333333,
			#333333 11px,
			transparent 11px,
			transparent 13px,
			#333333 13px
		),
		repeating-linear-gradient(
			90deg,
			#333333,
			#333333 11px,
			transparent 11px,
			transparent 13px,
			#333333 13px
		),
		repeating-linear-gradient(
			180deg,
			#333333,
			#333333 11px,
			transparent 11px,
			transparent 13px,
			#333333 13px
		),
		repeating-linear-gradient(
			270deg,
			#333333,
			#333333 11px,
			transparent 11px,
			transparent 13px,
			#333333 13px
		);
	background-size:
		1.5px 100%,
		100% 1.5px,
		1.5px 100%,
		100% 1.5px;
	background-position:
		0 0,
		0 0,
		100% 0,
		0 100%;
	background-repeat: no-repeat;
	padding: 1em;
	margin: 1em 0;
	background-color: #f8f8f8;
	min-height: 80px;
}

article p {
	margin-bottom: 3em;
}

article button {
	position: absolute;
	bottom: 0.5em;
	right: 0.5em;
	background-color: #eee;
	border: 1px solid #ccc;
	padding: 0.5em 1em;
	font-family: monospace;
	cursor: pointer;
}

article button:hover {
	background-color: #ddd;
}

sup {
	vertical-align: super;
	font-size: smaller;
}
sub {
	vertical-align: sub;
	font-size: smaller;
}
abbr {
	text-decoration: underline dotted;
	cursor: help;
}
address {
	font-style: italic;
	margin-bottom: 1em;
}
mark {
	background-color: #ff0;
	color: #000;
}
q {
	quotes: '“' '”' '‘' '’';
}
s,
del {
	text-decoration: line-through;
}
small {
	font-size: 0.8em;
}
var {
	font-style: italic;
}
ins {
	text-decoration: underline;
}
form {
	margin-bottom: 1em;
}
label {
	display: block;
	margin-bottom: 0.5em;
	font-weight: bold;
}
input,
textarea,
select {
	font-family: monospace;
	font-size: 1em;
	border: 1px dashed #ccc;
	padding: 0.5em;
	background-color: #f8f8f8;
	margin-bottom: 1em;
	width: 100%;
	box-sizing: border-box;
}
textarea {
	height: 6em;
	resize: vertical;
}
input:focus,
textarea:focus,
select:focus {
	outline: none;
	border-color: #888;
	background-color: #fff;
}
button,
input[type='submit'],
input[type='button'],
input[type='reset'] {
	font-family: monospace;
	font-size: 1em;
	background-color: #eee;
	border: 1px solid #ccc;
	padding: 0.5em 1em;
	cursor: pointer;
	position: relative;
	overflow: hidden;
}
button:hover,
input[type='submit']:hover,
input[type='button']:hover,
input[type='reset']:hover {
	background-color: #ddd;
}
button:focus,
input[type='submit']:focus,
input[type='button']:focus,
input[type='reset']:focus {
	outline: none;
	border-color: #888;
}
fieldset {
	border: 1px dashed #ccc;
	padding: 1em;
	margin-bottom: 1em;
}
legend {
	padding: 0 0.5em;
	font-weight: bold;
}

progress {
	width: 100%;
	height: 1em;
	background-color: #f0f0f0;
	border: 1px solid #ccc;
	margin-bottom: 1em;
}
progress::-webkit-progress-bar {
	background-color: #f0f0f0;
}
progress::-webkit-progress-value {
	background-color: #888;
}
progress::-moz-progress-bar {
	background-color: #888;
}
details {
	margin-bottom: 1em;
}
summary {
	cursor: pointer;
	font-weight: bold;
	list-style-type: none;
	position: relative;
	padding-left: 1.5em;
}
summary::before {
	content: '+ ';
	position: absolute;
	left: 0;
}
details[open] summary::before {
	content: '- ';
}

/*********************/

.note {
	padding: 2em 1em 1em 2em;
	background-color: #f0f8ff;
}
.note::before {
	content: 'Note: ';
	position: absolute;
	top: 0.5em;
	left: 0.5em;
	font-weight: bold;
}
.warning {
	padding: 2em 1em 1em 2em;
	background-color: #fff0f0;
	color: #cc0000;
}
.warning::before {
	content: 'Warning! ';
	position: absolute;
	top: 0.5em;
	left: 0.5em;
	font-weight: bold;
}
.tip {
	padding: 2em 1em 1em 2em;
	background-color: #f0fff0;
	color: #006600;
}
.tip::before {
	content: 'Tip: ';
	position: absolute;
	top: 0.5em;
	left: 0.5em;
	font-weight: bold;
}
aside {
	position: relative;
	background-image:
		repeating-linear-gradient(
			0deg,
			#333333,
			#333333 11px,
			transparent 11px,
			transparent 13px,
			#333333 13px
		),
		repeating-linear-gradient(
			90deg,
			#333333,
			#333333 11px,
			transparent 11px,
			transparent 13px,
			#333333 13px
		),
		repeating-linear-gradient(
			180deg,
			#333333,
			#333333 11px,
			transparent 11px,
			transparent 13px,
			#333333 13px
		),
		repeating-linear-gradient(
			270deg,
			#333333,
			#333333 11px,
			transparent 11px,
			transparent 13px,
			#333333 13px
		);
	background-size:
		1.5px 100%,
		100% 1.5px,
		1.5px 100%,
		100% 1.5px;
	background-position:
		0 0,
		0 0,
		100% 0,
		0 100%;
	background-repeat: no-repeat;
	padding: 1em;
	margin: 1em 0;
	background-color: #f8f8f8;
	text-align: center;
	font-style: italic;
}