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.

statscss-gridcss-onlyhairlineno-assets

Record

Added: 2026-08-21
Updated: 2026-09-28
Category: Layout · 9 patterns
Panes: Preview, HTML, CSS, JavaScript, Prompt
Deps: 0

Every KPI row on this site is built on this pattern.

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.

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.

Five filter tiles hold three columns until the stage is 56rem wide, so labels like “Downloading” never clip.

HTML

<p class="stage-cap">Reporting only — the figures are the whole job.</p>
<div class="hss-strip four">
  <div class="hss-tile"><span class="hss-label">Documents</span><span class="hss-fig">1,482</span><span class="hss-unit">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-unit">last 24h</span></div>
  <div class="hss-tile"><span class="hss-label">Clean runs</span><span class="hss-fig">98.4%</span><span class="hss-unit">no retries</span></div>
  <div class="hss-tile"><span class="hss-label">Quality score</span><span class="hss-fig missing" aria-label="No value">—</span><span class="hss-unit">not rated yet</span></div>
</div>

<p class="stage-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-hss-filter>
  <button class="hss-tile" type="button" data-state="all" aria-pressed="true"><span class="hss-label">All</span><span class="hss-fig">6</span><span class="hss-unit">downloads</span></button>
  <button class="hss-tile" type="button" data-state="Queued" aria-pressed="false"><span class="hss-label">Queued</span><span class="hss-fig">2</span><span class="hss-unit">downloads</span></button>
  <button class="hss-tile" type="button" data-state="Downloading" aria-pressed="false"><span class="hss-label">Downloading</span><span class="hss-fig">1</span><span class="hss-unit">downloads</span></button>
  <button class="hss-tile" type="button" data-state="Done" aria-pressed="false"><span class="hss-label">Done</span><span class="hss-fig">2</span><span class="hss-unit">downloads</span></button>
  <button class="hss-tile" type="button" data-state="Failed" aria-pressed="false"><span class="hss-label">Failed</span><span class="hss-fig">1</span><span class="hss-unit">downloads</span></button>
</div>
<ul class="hss-list" data-hss-list>
  <li data-state="Done"><span>Bicycle drivetrain teardown</span><span>Done</span></li>
  <li data-state="Downloading"><span>Kiln firing, part three</span><span>Downloading</span></li>
  <li data-state="Queued"><span>Field recording — marsh at dawn</span><span>Queued</span></li>
  <li data-state="Done"><span>Lathe restoration, episode 12</span><span>Done</span></li>
  <li data-state="Failed"><span>Sourdough hydration tests</span><span>Failed</span></li>
  <li data-state="Queued"><span>Bookbinding: the long stitch</span><span>Queued</span></li>
</ul>
<p class="hss-status" role="status" aria-live="polite" data-hss-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.

CSS

.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;
  container-type: inline-size;
}
@container (min-width: 21rem) { .hss-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@container (min-width: 42rem) { .hss-strip.four { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
/* five filter tiles only go to five columns when each tile can hold its label */
@container (min-width: 56rem) { .hss-strip.five { grid-template-columns: repeat(5, minmax(0, 1fr)); } }

.hss-tile { background: var(--surface); padding: 14px 16px; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.hss-label { font: 600 0.8125rem/1.3 ui-monospace, monospace; text-transform: uppercase; color: var(--dim); overflow-wrap: anywhere; }
.hss-fig { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--ink); }
.hss-fig.missing { color: var(--dim); font-weight: 500; }
.hss-tile[aria-pressed="true"] { background: color-mix(in srgb, var(--accent) 14%, var(--surface)); }

JavaScript

const strip = document.querySelector('[data-hss-filter]');
const tiles = strip.querySelectorAll('button');
const items = document.querySelectorAll('[data-hss-list] li');
const status = document.querySelector('[data-hss-status]');

tiles.forEach((tile) => {
  tile.addEventListener('click', () => {
    const state = tile.dataset.state;
    const wasOn = tile.getAttribute('aria-pressed') === 'true' && state !== 'all';
    const chosen = wasOn ? 'all' : state;
    tiles.forEach((other) => other.setAttribute('aria-pressed', String(other.dataset.state === chosen)));
    // counts stay computed from the unfiltered set, so tiles never change their figures
    let shown = 0;
    items.forEach((item) => {
      const visible = chosen === 'all' || item.dataset.state === chosen;
      item.hidden = !visible;
      if (visible) shown += 1;
    });
    status.textContent = chosen === 'all'
      ? `Showing all ${items.length} downloads.`
      : `Filtered to ${chosen}: ${shown} of ${items.length}. 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.

:root{--ground:#eef0f3;--surface:#ffffff;--surface-2:#f5f7f9;--border:#d2d8e0;--ink:#161b22;--dim:#56606e;--accent:#364f6a;--radius:10px}

.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;
  container-type: inline-size;
}
@container (min-width: 21rem) { .hss-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@container (min-width: 42rem) { .hss-strip.four { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
/* five filter tiles only go to five columns when each tile can hold its label */
@container (min-width: 56rem) { .hss-strip.five { grid-template-columns: repeat(5, minmax(0, 1fr)); } }

.hss-tile { background: var(--surface); padding: 14px 16px; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.hss-label { font: 600 0.8125rem/1.3 ui-monospace, monospace; text-transform: uppercase; color: var(--dim); overflow-wrap: anywhere; }
.hss-fig { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--ink); }
.hss-fig.missing { color: var(--dim); font-weight: 500; }
.hss-tile[aria-pressed="true"] { background: color-mix(in srgb, var(--accent) 14%, var(--surface)); }

<p class="stage-cap">Reporting only — the figures are the whole job.</p>
<div class="hss-strip four">
  <div class="hss-tile"><span class="hss-label">Documents</span><span class="hss-fig">1,482</span><span class="hss-unit">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-unit">last 24h</span></div>
  <div class="hss-tile"><span class="hss-label">Clean runs</span><span class="hss-fig">98.4%</span><span class="hss-unit">no retries</span></div>
  <div class="hss-tile"><span class="hss-label">Quality score</span><span class="hss-fig missing" aria-label="No value">—</span><span class="hss-unit">not rated yet</span></div>
</div>

<p class="stage-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-hss-filter>
  <button class="hss-tile" type="button" data-state="all" aria-pressed="true"><span class="hss-label">All</span><span class="hss-fig">6</span><span class="hss-unit">downloads</span></button>
  <button class="hss-tile" type="button" data-state="Queued" aria-pressed="false"><span class="hss-label">Queued</span><span class="hss-fig">2</span><span class="hss-unit">downloads</span></button>
  <button class="hss-tile" type="button" data-state="Downloading" aria-pressed="false"><span class="hss-label">Downloading</span><span class="hss-fig">1</span><span class="hss-unit">downloads</span></button>
  <button class="hss-tile" type="button" data-state="Done" aria-pressed="false"><span class="hss-label">Done</span><span class="hss-fig">2</span><span class="hss-unit">downloads</span></button>
  <button class="hss-tile" type="button" data-state="Failed" aria-pressed="false"><span class="hss-label">Failed</span><span class="hss-fig">1</span><span class="hss-unit">downloads</span></button>
</div>
<ul class="hss-list" data-hss-list>
  <li data-state="Done"><span>Bicycle drivetrain teardown</span><span>Done</span></li>
  <li data-state="Downloading"><span>Kiln firing, part three</span><span>Downloading</span></li>
  <li data-state="Queued"><span>Field recording — marsh at dawn</span><span>Queued</span></li>
  <li data-state="Done"><span>Lathe restoration, episode 12</span><span>Done</span></li>
  <li data-state="Failed"><span>Sourdough hydration tests</span><span>Failed</span></li>
  <li data-state="Queued"><span>Bookbinding: the long stitch</span><span>Queued</span></li>
</ul>
<p class="hss-status" role="status" aria-live="polite" data-hss-status>Showing all 6 downloads.</p>

<script>
const strip = document.querySelector('[data-hss-filter]');
const tiles = strip.querySelectorAll('button');
const items = document.querySelectorAll('[data-hss-list] li');
const status = document.querySelector('[data-hss-status]');

tiles.forEach((tile) => {
  tile.addEventListener('click', () => {
    const state = tile.dataset.state;
    const wasOn = tile.getAttribute('aria-pressed') === 'true' && state !== 'all';
    const chosen = wasOn ? 'all' : state;
    tiles.forEach((other) => other.setAttribute('aria-pressed', String(other.dataset.state === chosen)));
    // counts stay computed from the unfiltered set, so tiles never change their figures
    let shown = 0;
    items.forEach((item) => {
      const visible = chosen === 'all' || item.dataset.state === chosen;
      item.hidden = !visible;
      if (visible) shown += 1;
    });
    status.textContent = chosen === 'all'
      ? `Showing all ${items.length} downloads.`
      : `Filtered to ${chosen}: ${shown} of ${items.length}. Press the lit tile again to clear.`;
  });
});
</script>

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