:root {
    --sans-font:-apple-system,BlinkMacSystemFont,"Avenir Next",Avenir,"Nimbus Sans L",Roboto,"Noto Sans","Segoe UI",Arial,Helvetica,"Helvetica Neue",sans-serif;
    --mono-font:Consolas,Menlo,Monaco,"Andale Mono","Ubuntu Mono",monospace;
    --standard-border-radius:5px;
    --border-width:1px;
    --bg:#fff;
    --accent-bg:#f5f7ff;
    --text:#212121;
    --text-light:#585858;
    --border:#898ea4;
    --accent:#0d47a1;
    --accent-hover:#1266e2;
    --accent-text:var(--bg);
    --code:#d81b60;
    --preformatted:#444;
    --marked:#fd3;
    --disabled:#efefef
}
@media (prefers-color-scheme:dark) {
    :root {
	color-scheme:dark;
	--bg:#212121;
	--accent-bg:#2b2b2b;
	--text:#dcdcdc;
	--text-light:#ababab;
	--accent:#ffb300;
	--accent-hover:#ffe099;
	--accent-text:var(--bg);
	--code:#f06292;
	--preformatted:#ccc;
	--disabled:#111
    }
    img,
    video {
	opacity:.8
    }
}
*,
:before,
:after {
    box-sizing:border-box
}
textarea,
select,
input,
progress {
    -webkit-appearance:none;
    -moz-appearance:none;
    appearance:none
}
html {
    font-family:var(--sans-font);
    scroll-behavior:smooth
}
body {
    color:var(--text);
    background-color:var(--bg);
    grid-template-columns:1fr min(45rem,90%) 1fr;
    margin:0;
    font-size:1.15rem;
    line-height:1.5;
    display:grid
}
body>* {
    grid-column:2
}
body>header {
    background-color:var(--accent-bg);
    border-bottom:var(--border-width)solid var(--border);
    text-align:center;
    grid-column:1/-1;
    padding:0 .5rem 2rem
}
body>header>:only-child {
    margin-block-start:2rem
}
body>header h1 {
    max-width:1200px;
    margin:1rem auto
}
body>header p {
    max-width:40rem;
    margin:1rem auto
}
main {
    padding-top:1.5rem
}
body>footer {
    color:var(--text-light);
    text-align:center;
    border-top:var(--border-width)solid var(--border);
    margin-top:4rem;
    padding:2rem 1rem 1.5rem;
    font-size:.9rem
}
h1 {
    font-size:3rem
}
h2 {
    margin-top:3rem;
    font-size:2.6rem
}
h3 {
    margin-top:3rem;
    font-size:2rem
}
h4 {
    font-size:1.44rem
}
h5 {
    font-size:1.15rem
}
h6 {
    font-size:.96rem
}
p {
    margin:1.5rem 0
}
p,
h1,
h2,
h3,
h4,
h5,
h6 {
    overflow-wrap:break-word
}
h1,
h2,
h3 {
    line-height:1.1
}
@media only screen and (width<=720px) {
    h1 {
	font-size:2.5rem
    }
    h2 {
	font-size:2.1rem
    }
    h3 {
	font-size:1.75rem
    }
    h4 {
	font-size:1.25rem
    }
}
a,
a:visited {
    color:var(--accent)
}
a:hover {
    text-decoration:none
}
button,
.button,
a.button,
input[type=submit],
input[type=reset],
input[type=button] {
    border:var(--border-width)solid var(--accent);
    background-color:var(--accent);
    color:var(--accent-text);
    padding:.5rem .9rem;
    line-height:normal;
    text-decoration:none
}
.button[aria-disabled=true],
input:disabled,
textarea:disabled,
select:disabled,
button[disabled] {
    cursor:not-allowed;
    background-color:var(--disabled);
    border-color:var(--disabled);
    color:var(--text-light)
}
input[type=range] {
    padding:0
}
abbr[title] {
    cursor:help;
    text-decoration-line:underline;
    text-decoration-style:dotted
}
button:enabled:hover,
.button:not([aria-disabled=true]):hover,
input[type=submit]:enabled:hover,
input[type=reset]:enabled:hover,
input[type=button]:enabled:hover {
    background-color:var(--accent-hover);
    border-color:var(--accent-hover);
    cursor:pointer
}
.button:focus-visible,
button:focus-visible:where(:enabled),
input:enabled:focus-visible:where([type=submit],
				  [type=reset],
				  [type=button]) {
    outline:2px solid var(--accent);
    outline-offset:1px
}
header nav {
    padding:1rem 0 0;
    font-size:1rem;
    line-height:2
}
header nav ul,
header nav ol {
    flex-flow:wrap;
    place-content:space-around center;
    align-items:center;
    margin:0;
    padding:0;
    list-style-type:none;
    display:flex
}
header nav ul li,
header nav ol li {
    display:inline-block
}
header nav a,
header nav a:visited {
    border:var(--border-width)solid var(--border);
    border-radius:var(--standard-border-radius);
    color:var(--text);
    margin:0 .5rem 1rem;
    padding:.1rem 1rem;
    text-decoration:none;
    display:inline-block
}
header nav a:hover,
header nav a.current,
header nav a[aria-current=page],
header nav a[aria-current=true] {
    background:var(--bg);
    border-color:var(--accent);
    color:var(--accent);
    cursor:pointer
}
@media only screen and (width<=720px) {
    header nav a {
	border:none;
	padding:0;
	line-height:1;
	text-decoration:underline
    }
    header nav a.current {
	background:0 0
    }
}
aside,
details,
pre,
progress {
    background-color:var(--accent-bg);
    border:var(--border-width)solid var(--border);
    border-radius:var(--standard-border-radius);
    margin-bottom:1rem
}
aside {
    float:right;
    width:30%;
    margin-inline-start:15px;
    padding:0 15px;
    font-size:1rem
}
[dir=rtl] aside {
    float:left
}
@media only screen and (width<=720px) {
    aside {
	float:none;
	width:100%;
	margin-inline-start:0
    }
}
article,
fieldset,
dialog {
    border:var(--border-width)solid var(--border);
    border-radius:var(--standard-border-radius);
    margin-bottom:1rem;
    padding:1rem
}
article h2:first-child,
section h2:first-child,
article h3:first-child,
section h3:first-child {
    margin-top:1rem
}
section {
    border-top:var(--border-width)solid var(--border);
    border-bottom:var(--border-width)solid var(--border);
    margin:3rem 0;
    padding:2rem 1rem
}
section+section,
section:first-child {
    border-top:0;
    padding-top:0
}
section+section {
    margin-top:0
}
section:last-child {
    border-bottom:0;
    padding-bottom:0
}
details {
    padding:.7rem 1rem
}
summary {
    cursor:pointer;
    word-break:break-all;
    margin:-.7rem -1rem;
    padding:.7rem 1rem;
    font-weight:700
}
details[open]>summary+* {
    margin-top:0
}
details[open]>summary {
    margin-bottom:.5rem
}
details[open]>:last-child {
    margin-bottom:0
}
table {
    border-collapse:collapse;
    margin:1.5rem 0
}
figure>table {
    width:max-content;
    margin:0
}
td,
th {
    border:var(--border-width)solid var(--border);
    text-align:start;
    padding:.5rem
}
th {
    background-color:var(--accent-bg);
    font-weight:700
}
tr:nth-child(2n) {
    background-color:var(--accent-bg)
}
table caption {
    margin-bottom:.5rem;
    font-weight:700
}
textarea,
select,
input,
button,
.button {
    font-size:inherit;
    border-radius:var(--standard-border-radius);
    box-shadow:none;
    max-width:100%;
    margin-bottom:.5rem;
    padding:.5em;
    font-family:inherit;
    display:inline-block
}
textarea,
select,
input {
    color:var(--text);
    background-color:var(--bg);
    border:var(--border-width)solid var(--border)
}
label {
    display:block
}
textarea:not([cols]) {
    width:100%
}
select:not([multiple]) {
    background-image:linear-gradient(45deg,transparent 49%,var(--text)51%),linear-gradient(135deg,var(--text)51%,transparent 49%);
    background-position:calc(100% - 15px),calc(100% - 10px);
    background-repeat:no-repeat;
    background-size:5px 5px,5px 5px;
    padding-inline-end:25px
}
[dir=rtl] select:not([multiple]) {
    background-position:10px,15px
}
input[type=checkbox],
input[type=radio] {
    vertical-align:middle;
    width:min-content;
    position:relative
}
input[type=checkbox]+label,
input[type=radio]+label {
    display:inline-block
}
input[type=radio] {
    border-radius:100%
}
input[type=checkbox]:checked,
input[type=radio]:checked {
    background-color:var(--accent)
}
input[type=checkbox]:checked:after {
    content:" ";
    border-right:solid var(--bg).08em;
    border-bottom:solid var(--bg).08em;
    background-color:#0000;
    border-radius:0;
    width:.2em;
    height:.4em;
    font-size:1.8em;
    position:absolute;
    top:.04em;
    left:.18em;
    transform:rotate(45deg)
}
input[type=radio]:checked:after {
    content:" ";
    background-color:var(--bg);
    border-radius:100%;
    width:.3em;
    height:.3em;
    font-size:1.8em;
    position:absolute;
    top:.125em;
    left:.125em
}
@media only screen and (width<=720px) {
    textarea,
    select,
    input {
	width:100%
    }
}
input[type=color] {
    height:2.5rem;
    padding:.2rem
}
input[type=file] {
    border:0
}
hr {
    height:var(--border-width);
    background:var(--border);
    border:none;
    margin:1rem auto
}
mark {
    border-radius:var(--standard-border-radius);
    background-color:var(--marked);
    color:#000;
    padding:2px 5px
}
mark a {
    color:#0d47a1
}
img,
video {
    border-radius:var(--standard-border-radius);
    max-width:100%;
    height:auto
}
figure {
    margin:0;
    display:block;
    overflow-x:auto
}
figure>img,
figure>picture>img {
    margin-inline:auto;
    display:block
}
figcaption {
    text-align:center;
    color:var(--text-light);
    margin-block:1rem;
    font-size:.9rem;
    position:sticky;
    left:0
}
blockquote {
    border-inline-start:.35rem solid var(--accent);
    color:var(--text-light);
    margin-block:2rem;
    margin-inline:2rem 0;
    padding:.4rem .8rem;
    font-style:italic
}
cite {
    color:var(--text-light);
    font-size:.9rem;
    font-style:normal
}
dt {
    color:var(--text-light)
}
code,
pre,
pre span,
kbd,
samp {
    font-family:var(--mono-font);
    color:var(--code)
}
kbd {
    color:var(--preformatted);
    border:var(--border-width)solid var(--preformatted);
    border-bottom:3px solid var(--preformatted);
    border-radius:var(--standard-border-radius);
    padding:.1rem .4rem
}
pre {
    max-width:100%;
    color:var(--preformatted);
    padding:1rem 1.4rem;
    overflow:auto
}
pre code {
    color:var(--preformatted);
    background:0 0;
    margin:0;
    padding:0
}
progress {
    width:100%
}
progress:indeterminate {
    background-color:var(--accent-bg)
}
progress::-webkit-progress-bar {
    border-radius:var(--standard-border-radius);
    background-color:var(--accent-bg)
}
progress::-webkit-progress-value {
    border-radius:var(--standard-border-radius);
    background-color:var(--accent)
}
progress::-moz-progress-bar {
    border-radius:var(--standard-border-radius);
    background-color:var(--accent);
    transition-property:width;
    transition-duration:.3s
}
progress:indeterminate::-moz-progress-bar {
    background-color:var(--accent-bg)
}
dialog {
    background-color:var(--bg);
    max-width:40rem;
    margin:auto
}
dialog::backdrop {
    background-color:var(--bg);
    opacity:.8
}
@media only screen and (width<=720px) {
    dialog {
	max-width:calc(100vw - 2rem)
    }
}
sup,
sub {
    vertical-align:baseline;
    position:relative
}
sup {
    top:-.4em
}
sub {
    top:.3em
}
.notice {
    background:var(--accent-bg);
    border:var(--border-width)solid var(--border);
    border-radius:var(--standard-border-radius);
    margin:2rem 0;
    padding:1.5rem
}
@media print {
    @page {
	margin:1cm
    }
    body {
	display:block
    }
    body>header {
	background-color:unset
    }
    body>header nav,
    body>footer {
	display:none
    }
    article {
	border:none;
	padding:0
    }
    a[href^=http]:after {
	content:" <" attr(href)">"
    }
    abbr[title]:after {
	content:" (" attr(title)")"
    }
    a {
	text-decoration:none
    }
    p {
	widows:3;
	orphans:3
    }
    hr {
	border-top:var(--border-width)solid var(--border)
    }
    mark {
	border:var(--border-width)solid var(--border)
    }
    pre,
    table,
    figure,
    img,
    svg {
	break-inside:avoid
    }
    pre code {
	white-space:pre-wrap
    }
}

/**
Navbar
*/

nav {
    padding: 16px 0px;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

nav li {
    display: inline;
}

nav li a {
    text-align: center;
    padding: 0px 16px 0px 0px;
    text-decoration: none;
    font-weight: bold;
}

hr {
    border: 2px solid black;
    width: 100%;
}