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
- stats
- css-grid
- css-only
- hairline
- no-assets
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 four"> <div class="hss-tile"><span class="l">Documents</span><span class="v">1,482</span><span class="u">this period</span></div> <div class="hss-tile"><span class="l">Median time</span><span class="v">3.2s</span><span class="u">last 24h</span></div> <div class="hss-tile"><span class="l">Clean runs</span><span class="v">98.4%</span><span class="u">no retries</span></div> <div class="hss-tile"><span class="l">Quality score</span><span class="v none">—</span><span class="u">not rated yet</span></div> </div>
.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: 14px 16px; min-width: 0; }
.hss-tile .l { font: 0.8125rem/1.3 ui-monospace, monospace; text-transform: uppercase; color: var(--dim); }
.hss-tile .v { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.hss-tile[aria-pressed="true"] { background: color-mix(in srgb, var(--accent) 14%, var(--surface)); }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 (one, then two, then four) rather than letting auto-fit choose, so a row never ends on a lonely tile. Two rules of honesty: render a missing value as a dimmed em dash, never a zero, and keep units with the number. In the filter form, each tile is a toggle button with aria-pressed, not a tab; counts are computed from the unfiltered set so they don't collapse as you filter.
Full prompt continues with tile anatomy and the filter form. Source: hairline-stat-strip.ts.