Layout Updated

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.

Added Aug 21, 2026 · Updated Sep 28, 2026

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

stats
css-grid
css-only
hairline
no-assets

Reporting only — the figures are the whole job.

Documents: 1,482; this period
Median time: 3.2s; last 24h
Clean runs: 98.4%; no retries
Quality score: —; not rated yet

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-caption">Reporting only — the figures are the whole job.</p>
<dl class="hss-strip hss-strip--4">
  <div class="hss-tile"><dt class="hss-label">Documents</dt><dd class="hss-fig">1,482</dd><dd class="hss-sub">this period</dd></div>
  <div class="hss-tile"><dt class="hss-label">Median time</dt><dd class="hss-fig">3.2s</dd><dd class="hss-sub">last 24h</dd></div>
  <div class="hss-tile"><dt class="hss-label">Clean runs</dt><dd class="hss-fig">98.4%</dd><dd class="hss-sub">no retries</dd></div>
  <div class="hss-tile"><dt class="hss-label">Quality score</dt><dd class="hss-fig is-missing">—</dd><dd class="hss-sub">not rated yet</dd></div>
</dl>

<div class="hss-strip hss-strip--5" role="group" aria-label="Filter downloads">
  <button class="hss-tile" type="button" data-value="all" aria-pressed="true">
    <span class="hss-label">All</span><span class="hss-fig">6</span><span class="hss-sub">downloads</span>
  </button>
  <!-- Queued, Downloading, Done, Failed follow the same shape -->
</div>
<p class="hss-status" aria-live="polite">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, 1fr); } }
@media (min-width: 42rem) { .hss-strip--4 { grid-template-columns: repeat(4, 1fr); } }

.hss-tile { background: var(--surface); padding: 1rem; min-width: 0; }
.hss-label { font: 500 0.8125rem/1.3 ui-monospace, monospace; text-transform: uppercase; color: var(--dim); }
.hss-fig { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--ink); }
.hss-fig.is-missing { color: var(--dim); }
.hss-sub { overflow-wrap: anywhere; color: var(--dim); }

button.hss-tile[aria-pressed="true"] {
  background: color-mix(in srgb, var(--accent) 14%, var(--surface));
}

const strip = document.querySelector('[aria-label="Filter downloads"]');
const tiles = [...strip.querySelectorAll('button.hss-tile')];
const items = [...document.querySelectorAll('[data-state]')];
const status = document.querySelector('.hss-status');

tiles.forEach((tile) => tile.addEventListener('click', () => {
  const alreadyOn = tile.getAttribute('aria-pressed') === 'true';
  const value = alreadyOn ? 'all' : tile.dataset.value;
  tiles.forEach((other) => other.setAttribute('aria-pressed', String(other.dataset.value === value)));
  const shown = items.filter((item) => (item.hidden = value !== 'all' && item.dataset.state !== value) === false);
  status.textContent = value === 'all'
    ? 'Showing all 6 downloads.'
    : `Filtered to ${tile.querySelector('.hss-label').textContent}: ${shown.length} of 6. Press the lit tile again to clear.`;
}));

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 column counts, tile anatomy, two rules of honesty (render a missing value as a dimmed em dash; keep units with the number), the filter form, computing counts from the unfiltered set, and using aria-pressed rather than tab roles.

Fixed here: the five-tile filter row now wraps to two columns before its labels can overflow a tile.

Hairline stat strip

Reach for it when building

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