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seirdy.one/assets/css/main.css
Rohan Kumar 60bf9110b9
A11y and perf improvements
- Even less halation for dark theme
- More contrast for borders
- Slightly larger font, fixes APCA contrast issue for <small>
- Make responsive navbar work in NetSurf
- Make aria-current page bold
- Use content-visibility to unload footers and endnotes
- Add aria-labels to unclear webring link text
- Replace <hr> elements with css borders; the semantic meaning of <hr>
  was unnecessary with section breaks.
2022-04-02 23:54:39 -07:00

158 lines
4.7 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: 105%/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 {
html {
max-width: 45em;
padding: 0 3%;
}
.e-content {
margin: auto;
max-width: 38em;
}
}
@supports (border-inline-start: 6px) {
/* narrow screens: reduce margin for blockquotes a lot, using
* a thick left-side border instead, or a right-side border in
* RTL locales. Some browsers like NetSurf or IE don't support this,
* but they're pretty much only used on the desktop where a huge indent
* is less of a problem.*/
blockquote {
border-inline-start: 5px solid #aaa;
margin: 0;
padding: 0 0.8em;
}
}
/* single-line nav on widescreen and print.
* Single-line nav on print saves almost half a page. */
@media (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;
}
}
a[aria-current="page"] {
font-weight: bold;
}
/* narrow screens: remove unused figure margin. */
figure {
margin: 0;
}
/* 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,
pre,
kbd {
/* stylelint-disable -- compatibility hack */
font-family: monospace, monospace;
/* stylelint-enable */
}
/* 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 #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 #aaa;
content-visibility: auto;
}
/* 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.
* - Investigate CSS-based hints to screenreaders. */