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.
Showing all 6 downloads.
- Bicycle drivetrain teardownDone
- Kiln firing, part threeDownloading
- Field recording — marsh at dawnQueued
- Lathe restoration, episode 12Done
- Sourdough hydration testsFailed
- Bookbinding: the long stitchQueued
<div class="hss-strip">
<div class="hss-tile">
<span class="hss-label">Documents</span>
<span class="hss-figure">1,482</span>
<span class="hss-unit">this period</span>
</div>
<!-- three more tiles -->
</div>
<div class="hss-strip hss-strip--filter" role="group" aria-label="Filter downloads">
<button class="hss-tile" aria-pressed="false" data-status="all">
<span class="hss-label">All</span>
<span class="hss-figure">6</span>
<span class="hss-unit">downloads</span>
</button>
<!-- Queued, Downloading, Done, Failed -->
</div>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, 1fr); } }
@media (min-width: 42rem) { .hss-strip { grid-template-columns: repeat(4, 1fr); } }
.hss-tile { background: var(--surface); padding: 0.9rem 1rem; }
.hss-label {
font: 0.8125rem/1.3 ui-monospace, monospace;
text-transform: uppercase;
color: var(--dim);
}
.hss-figure { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.hss-figure[data-missing] { color: var(--dim); }
.hss-tile[aria-pressed="true"] {
background: color-mix(in srgb, var(--accent) 14%, var(--surface));
}const tiles = document.querySelectorAll('.hss-strip--filter .hss-tile');
tiles.forEach((tile) => {
tile.addEventListener('click', () => {
const isActive = tile.getAttribute('aria-pressed') === 'true';
tiles.forEach((other) => other.setAttribute('aria-pressed', 'false'));
tile.setAttribute('aria-pressed', String(!isActive));
applyFilter(isActive ? 'all' : tile.dataset.status);
});
});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 full prompt continues with sections on:
- Pinning the column counts (1, then 2 at 21rem, then 4 at 42rem) instead of auto-fit.
- Tile anatomy: mono uppercase label, bold tabular figure, unit line.
- Two rules of honesty: render a missing value as a dimmed em dash, and keep units with the number.
- The filter form, where each tile narrows the list beneath it.
- Computing counts from the unfiltered set.
- Using
aria-pressedrather than tab roles.