Hairline stat strip
A row of stat tiles joined by hairlines that are grid gap, not borders — the container paints the border color and the tiles paint the surface, so separators never double up or break when the row wraps — in a reporting form and in a second form where each tile is the filter for the list beneath it.
Reach for it when building
- summary strip at the top of a detail page
- dashboard KPI row
- account usage overview
- report header figures
- profile stats band
Reporting only — the figures are the whole job.
Same strip, working as the filter. Press a tile to narrow the list; press it again to clear.
- Bicycle drivetrain teardownDone
- Kiln firing, part threeDownloading
- Field recording — marsh at dawnQueued
- Lathe restoration, episode 12Done
- Sourdough hydration testsFailed
- Bookbinding: the long stitchQueued
Showing all 6 downloads.
<p class="hss-cap">Reporting only — the figures are the whole job.</p> <div class="hss-strip"> <div class="hss-tile"><span class="k">Documents</span><span class="v">1,482</span><span class="u">this period</span></div> <div class="hss-tile"><span class="k">Median time</span><span class="v">3.2s</span><span class="u">last 24h</span></div> <div class="hss-tile"><span class="k">Clean runs</span><span class="v">98.4%</span><span class="u">no retries</span></div> <div class="hss-tile"><span class="k">Quality score</span><span class="v none" aria-label="No value">—</span><span class="u">not rated yet</span></div> </div> <p class="hss-cap">Same strip, working as the filter. Press a tile to narrow the list; press it again to clear.</p> <div class="hss-strip five" data-filter-strip> <button class="hss-tile" data-filter="all" aria-pressed="false">…</button> <!-- one button per state, aria-pressed toggles --> </div> <ul class="dl-list" data-dl-list>…</ul> <p role="status" data-dl-status>Showing all 6 downloads.</p>
Colors come from shared theme tokens — --surface, --ink, --border, --accent and friends — so this CSS carries no palette of its own. Use Runnable file to copy the tokens along with it.
.hss-strip {
display: grid;
gap: 1px;
background: var(--border);
border: 1px solid var(--border);
border-radius: var(--radius);
overflow: hidden;
grid-template-columns: 1fr;
}
@media (min-width: 21rem) { .hss-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 42rem) { .hss-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (min-width: 60rem) { .hss-strip.five { grid-template-columns: repeat(5, minmax(0, 1fr)); } }
.hss-tile { background: var(--surface); padding: .9rem 1rem; min-width: 0; }
.hss-tile .k {
font: 600 .8125rem/1.3 ui-monospace, monospace;
text-transform: uppercase; letter-spacing: .08em;
color: var(--dim); overflow-wrap: anywhere;
}
.hss-tile .v { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.hss-tile .v.none { color: var(--dim); }
button.hss-tile[aria-pressed="true"] {
background: color-mix(in srgb, var(--accent) 14%, var(--surface));
}const tiles = [...document.querySelectorAll('[data-filter-strip] button')];
const rows = [...document.querySelectorAll('[data-dl-list] li')];
const status = document.querySelector('[data-dl-status]');
tiles.forEach((tile) => tile.addEventListener('click', () => {
const wasOn = tile.getAttribute('aria-pressed') === 'true';
tiles.forEach((other) => other.setAttribute('aria-pressed', 'false'));
const filter = wasOn || tile.dataset.filter === 'all' ? null : tile.dataset.filter;
if (filter) tile.setAttribute('aria-pressed', 'true');
let shown = 0;
rows.forEach((row) => {
row.hidden = filter && row.dataset.state !== filter;
if (!row.hidden) shown += 1;
});
status.textContent = filter
? `Filtered to ${tile.dataset.label}: ${shown} of ${rows.length}. Press the lit tile again to clear.`
: `Showing all ${rows.length} downloads.`;
}));Build a strip of statistic tiles that reads as one joined instrument panel rather than a row of floating cards.
The separators between tiles must not be borders. Make the container a CSS grid with gap: 1px and give the container itself the border color as its background; each tile then paints the surface color on top. The 1px of container showing through the gap is the hairline. This is the entire pattern: real borders double where two tiles meet and leave a stray edge when auto-fit wraps the row, and a gap physically cannot do either.
The prompt continues; its remaining sections, summarized:
Pin the column counts. Go 1 → 2 (at 21rem) → 4 (at 42rem) with explicit media queries rather than auto-fit, so a row never ends with one orphaned tile stretched across the whole width. Give tiles min-width: 0 so long labels wrap inside their tile instead of pushing it wider.
Tile anatomy. A small uppercase label, the figure in bold tabular numerals, then a one-line qualifier that says what window the figure covers.
Two rules of honesty. Render a missing value as a dimmed em dash with an accessible label, never a zero. Keep units with the number (3.2s, 98.4%) so the figure cannot be read without them.
The filter form. When the strip also filters a list, each tile becomes a button with aria-pressed. Pressing a lit tile clears the filter. Compute every count from the unfiltered set so the numbers do not collapse as the user narrows the list. Use aria-pressed rather than tab roles: these are toggles over one list, not panels.