1html {
 2	background:#777;
 3}
 4body {
 5	margin:1em auto;
 6	max-width:850px;
 7	color:#000;
 8	background:#ffffea;
 9	border:4px solid #5aa
10}
11a {
12	color:#005;
13}
14img {
15	width:100%
16}
17pre {
18	overflow-x:scroll;
19}
20.nobreak {
21	white-space:nowrap;
22}
23h1::before, h2::before, h3::before, nav::before {
24	display: inline-block;
25	background: #88c;
26	border: 0.15rem solid #88c;
27	border-bottom: 0.10rem solid #88c;
28	width: 1rem;
29	height: 2rem;
30	content: "";
31	margin-right: 0.25em;
32	vertical-align: bottom;
33}
34nav::before {
35	background: none;
36	border-color: transparent;
37}
38h2::before, h3::before {
39	height: 1em;
40	background: none;
41}
42h1, nav {
43	margin: 0;
44	border-bottom: 0.1em solid black;
45	line-height: 1;
46	background: #eaffff;
47}
48h2, h3 {
49	margin: 0;
50	border-top: 0.2rem solid black;
51	background: #eaffff;
52	line-height: 1;
53}
54h1 + h2 {
55	border-top: initial;
56}
57nav {
58	font-size: 2em;
59}
60nav ul, nav ul li {
61	display: inline;
62}
63nav ul {
64	padding: 0;
65}
66.win {
67	margin-top: -0.1rem;
68	margin-left: 1.12rem;
69	padding: 0.5em;
70	border-top: 0.1rem solid #88c;
71	border-left: 0.15em solid #88884c;
72}
73.win *:first-child {
74	margin-top: 0;
75}
76.win *:last-child {
77	margin-bottom: 0;
78}
79h1 + .win {
80	border-top: initial;
81	margin-top: initial;
82}
83