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.

Documents1,482this period

Median time3.2slast 24h

Clean runs98.4%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.

<!-- Hairline stat strip: tokens + CSS + HTML + JS in one file -->
<style>
:root { --ground:#eef0f3; --surface:#ffffff; --surface-2:#f5f7f9; --border:#d2d8e0; --ink:#161b22; --dim:#56606e; --accent:#364f6a; --radius:10px; }
@media (prefers-color-scheme: dark) { :root { --ground:#10141a; --surface:#191f27; --surface-2:#202834; --border:#2c3743; --ink:#e6ecf3; --dim:#97a4b4; --accent:#6f92bd; } }
.hss-strip {
  display: grid;
  gap: 1px;                         /* the hairline */
  background: var(--border);        /* shows through the gap */
  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: .85rem 1rem; }
.hss-label {
  font: .8125rem/1.4 ui-monospace, monospace;
  text-transform: uppercase; color: var(--dim);
}
.hss-fig { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.hss-fig.missing { color: var(--dim); }
button.hss-tile[aria-pressed="true"] {
  background: color-mix(in srgb, var(--accent) 14%, var(--surface));
}
</style>
<div class="hss-strip">
  <div class="hss-tile">
    <span class="hss-label">Documents</span>
    <span class="hss-fig">1,482</span>
    <span class="hss-sub">this period</span>
  </div>
  <div class="hss-tile">
    <span class="hss-label">Median time</span>
    <span class="hss-fig">3.2s</span>
    <span class="hss-sub">last 24h</span>
  </div>
  <!-- … -->
  <div class="hss-tile">
    <span class="hss-label">Quality score</span>
    <span class="hss-fig missing" aria-label="Not rated yet">—</span>
    <span class="hss-sub">not rated yet</span>
  </div>
</div>
<script>
const tiles = [...document.querySelectorAll('[data-filter]')];
const rows = [...document.querySelectorAll('.hss-list li')];
const status = document.getElementById('hss-status');

tiles.forEach((tile) => tile.addEventListener('click', () => {
  const wasOn = tile.getAttribute('aria-pressed') === 'true';
  const value = wasOn || tile.dataset.filter === 'All' ? 'All' : tile.dataset.filter;
  tiles.forEach((other) =>
    other.setAttribute('aria-pressed', String(other.dataset.filter === value && value !== 'All')));
  let shown = 0;
  rows.forEach((row) => {
    row.hidden = value !== 'All' && row.dataset.status !== value;
    if (!row.hidden) shown += 1;
  });
  status.textContent = value === 'All'
    ? 'Showing all 6 downloads.'
    : `Filtered to ${value}: ${shown} of 6. Press the lit tile again to clear.`;
}));
</script>

<div class="hss-strip">
  <div class="hss-tile">
    <span class="hss-label">Documents</span>
    <span class="hss-fig">1,482</span>
    <span class="hss-sub">this period</span>
  </div>
  <div class="hss-tile">
    <span class="hss-label">Median time</span>
    <span class="hss-fig">3.2s</span>
    <span class="hss-sub">last 24h</span>
  </div>
  <!-- … -->
  <div class="hss-tile">
    <span class="hss-label">Quality score</span>
    <span class="hss-fig missing" aria-label="Not rated yet">—</span>
    <span class="hss-sub">not rated yet</span>
  </div>
</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;                         /* the hairline */
  background: var(--border);        /* shows through the gap */
  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: .85rem 1rem; }
.hss-label {
  font: .8125rem/1.4 ui-monospace, monospace;
  text-transform: uppercase; color: var(--dim);
}
.hss-fig { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.hss-fig.missing { 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]')];
const rows = [...document.querySelectorAll('.hss-list li')];
const status = document.getElementById('hss-status');

tiles.forEach((tile) => tile.addEventListener('click', () => {
  const wasOn = tile.getAttribute('aria-pressed') === 'true';
  const value = wasOn || tile.dataset.filter === 'All' ? 'All' : tile.dataset.filter;
  tiles.forEach((other) =>
    other.setAttribute('aria-pressed', String(other.dataset.filter === value && value !== 'All')));
  let shown = 0;
  rows.forEach((row) => {
    row.hidden = value !== 'All' && row.dataset.status !== value;
    if (!row.hidden) shown += 1;
  });
  status.textContent = value === 'All'
    ? 'Showing all 6 downloads.'
    : `Filtered to ${value}: ${shown} 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.

Pin the column counts

Go from one column to two at 21rem and four at 42rem, instead of letting auto-fit decide, so a row never ends with a single orphaned tile.

Two rules of honesty

Render a missing value as a dimmed em dash, never as zero. Keep units with the number, so a figure can be read without its label.

The filter form

When each tile filters the list beneath it, compute every count from the unfiltered set, and use aria-pressed on buttons rather than tab roles, because the list is filtered, not replaced.