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seirdy.one/assets/css/main.css
Rohan Kumar 83b4f32d0b
Emphasize current section in navbar
WCAG recommends telling visitors about their current place in a site's
hierarchy. All pages are exactly zero or one level below a section, so
simply emphasizing a member of the navigation links should be
sufficient.
2022-04-18 19:54:40 -07:00

235 lines
6.4 KiB
CSS

/* CSS that adds the bare minimum for a simple layout.
* Nothing here exists purely for aesthetics except the unstyled-list;
* everything else addresses a specific a11y, compatibility, or critical
* usability need.
* I also don't define any non-semantic classes besides unstyled-list.
* The the other classnames referenced here are from microformats2. */
/* Start with browser defaults: default fonts, non-dark-mode colors, etc
* Only change things to solve a specific a11y or significant usability
* need. One exception: cosmetic improvement for unstyled-list */
html {
/* Mobile screens benefit from greater line-spacing so links are
* further apart. Dyslexic users prefer the spacing too.
* <100dpi screens: sans-serif is better. Why did browsers settle
* on serif being the default?? */
font: 100%/1.5 sans-serif;
/* Aligning to the center with space on both sides prevents accidental
* link activation on mobile devices. */
margin: auto;
}
/* WCAG recommends a max line width. Not everyone can resize the
* viewport.
* This should not take effect on printouts, to save paper. */
@media screen {
/* 45em is the lowest reasonable width for titles, nav, footers, etc */
html {
max-width: 45em;
padding: 0 2%;
}
/* 45em is too wide for long body text. */
.e-content {
margin: auto;
max-width: 38em;
}
}
/* narrow screens: reduce margin for blockquotes a lot, using
* a thick left-side border instead. */
blockquote {
border-left: 4px solid;
margin: 0;
padding-left: 0.8em;
}
/* narrow screens: reduce list indentation */
dd,
ol,
ul {
margin: 0;
padding-left: 1.5em;
}
/* Narrow screens: allow hyphenating titles
* I can't add soft hyphens to these. */
h1 {
hyphens: auto;
}
/* Very narrow screens: full hyphenation */
@media (max-width: 11em) {
article,
h2,
h3 {
hyphens: auto
}
}
/* single-line nav on widescreen and print.
* Single-line nav on print saves almost half a page. */
@media print, (min-width: 32em) {
header nav li {
display: inline;
/* inline-end doesn't work in netsurf. -right should stil make sense
* in RTL machine translation, it'll just look a bit indented. */
padding-right: 0.5em;
}
}
/* <kbd> should be distinguished from <code> and surrounding text
* in a way beyond font-face; at least two visual distinctions needed */
kbd {
font-weight: bold;
}
/* narrow screens: remove unused figure margins */
figure {
margin: 0;
}
/* figcaptions should be distinct from surrounding paragraphs tho */
figure:not([itemtype]) figcaption {
margin: 0 10%;
}
/* Mobile optimization: nav links are tappable with fat fingers */
nav li,
.unstyled-list li {
margin-bottom: 0.5em;
}
/* Lists without bullets: navlinks, posts lists, webmentions.
* Those three are lists whose items are already easily distinguishable,
* rendering bullet points as unnecessary extra visual noise. Pretty
* much the only purely-aesthetic change in this CSS file. */
.unstyled-list {
padding: 0;
}
.unstyled-list li {
list-style-type: none;
}
/* browsers make monospace small and unreadable for some dumb legacy
* reason and this somehow fixes that without overriding the user's
* font size preferences. */
code,
kbd,
samp {
font-family: monospace, monospace;
}
/* Narrow screens: long words can cause content to flow out of the
* viewport, triggering horizontal scrolling. Allow breaking words in
* content I don't control (comments). For content I do control, I just
* add soft hyphens to the HTML. */
.u-comment,
:not(pre) > code {
overflow-wrap: break-word;
/* borders shouldn't touch text */
padding: 0 0.1em;
}
/* Narrow screens: allow horizontal scroll in a pre block. */
pre {
overflow: auto;
padding: 0.5em;
}
/* Distinguish images from the background in case their color is
* too similar to the page background color. Also put a border around
* <pre> and <code> to distinguish them in ways besides font-family. The
* use of borders in place of background colors for distinguishing
* elements is an officially documented WCAG technique. */
img,
pre,
:not(pre) > code {
border: 1px solid;
}
/* A black border is too harsh. */
:not(pre) > code {
border-color: #aaa;
}
/* center images that aren't my indieweb icon; same justification as
* for centering the body contents. Also makes images easier to see
* for people holding a device with one hand. */
img:not(.u-photo) {
display: block;
height: auto;
margin: auto;
max-width: 100%;
}
/* WCAG Technique C25: use borders to separate sections.
* Also use "content-visibility: auto" to improve performance by
* reducing the number of DOM nodes rendered at once. */
footer,
section[role="doc-endnotes"] {
border-top: 1px solid;
content-visibility: auto;
}
/* Some browser focus indicators are inaccessible; override them with
* something more visible. See WCAG 2.x SC 2.4.12. I also tried to
* match browser behavior; mainstream browsers use :focus-visible
* instead of focus but older/simpler browsers only support :focus.
* I borrowed these directives from
* https://www.tempertemper.net/blog/refining-focus-styles-with-focus-visible
* */
/* For browsers that don't support :focus-visible */
a:focus,
[tabindex]:focus {
outline: 3px solid;
}
/* Remove :focus styling for browsers that do support :focus-visible */
@supports selector(:focus-visible) {
a:focus:not(:focus-visible),
[tabindex]:focus:not(:focus-visible) {
outline: none;
}
}
/* Add focus styling back in browsers that do support :focus-visible */
:focus-visible {
outline: 3px solid;
}
/* Skip link is hidden until focused.
* Needs background color so it can appear over other elements on narrow
* screens. If we set a background color, we must also set a foreground
* color. System colors like Canvas and LinkText aren't supported by all
* browsers, so we make up our own. */
.skip {
position: absolute;
top: -2em;
left: .25em;
/* #06c is the default link color in FF, IE, and ux.redhat.com
* #00e is the default in WebKit, Blink, and ancient FF. */
color: #00e;
background-color: #fff;
}
.skip:focus {
top: .5em;
}
/* Todo:
* - Some browsers don't scale SVGs properly; the img container
* dimensions crop the image rather than scale it. Investigate
* if this only applies to Internet Explorer or if it applies to
* other uncommon browsers too. If any non-IE browsers do this and/or
* if the spec allows this behavior, try to correct it here.
* - Wait till Webkit fixes its broken-ass default dark stylesheet
* then consider trimming the dark stylesheet I provide.
* */