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Added 2 Sept 2026
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import-error-grid-15827
Import Error Grid
Tables & Data Grids

Import Error Grid

CSV import preview headed by a red count banner, the two offending cells tinted and underlined with a wavy rule that raises the reason for the rejection on hover.

Tables & Data Gridsimporterrorsvalidationcsvgrid
lines of CSS
76lines of CSS
dependencies
0dependencies
browser, for years
Everybrowser, for years
motion only on interaction
Hovermotion only on interaction
Backdrop
!2 cells need fixing before import
NameSignedSeatsAtlas Ltd2026-04-1124Northwind11 Aprnot ISO 86018Cobalt2026-02-02manynot a number
Open a live copy in

Vue, Svelte, styled-components and Tailwind exports are part of Pro. HTML, CSS and React are free forever.

import-error-grid-15827.css
.fx-v14-tb-import-15826 {
  width: 250px;
  font-size: 0.63rem;
  color: #cbd5e1;
  background: #0f1626;
  border: 1px solid #253049;
  border-radius: 0.45rem;
  overflow: hidden;
}
.fx-v14-tb-import-15826 .bn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.5rem;
  font-size: 0.6rem;
  color: #fecaca;
  background: rgba(248,113,113,0.12);
  border-bottom: 1px solid rgba(248,113,113,0.3);
}
.fx-v14-tb-import-15826 .bn i {
  display: grid;
  place-items: center;
  flex: none;
  width: 14px;
  height: 14px;
  font-style: normal;
  font-size: 0.58rem;
  font-weight: 700;
  color: #450a0a;
  background: #f87171;
  border-radius: 50%;
}
.fx-v14-tb-import-15826 .g { display: grid; grid-template-columns: 1fr 1fr 44px; }
.fx-v14-tb-import-15826 .g > span {
  position: relative;
  padding: 0.28rem 0.45rem;
  border-bottom: 1px solid #1b2438;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.fx-v14-tb-import-15826 .h {
  font-size: 0.54rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #64748b;
  background: #131c31;
}
.fx-v14-tb-import-15826 .g > span.bad {
  overflow: visible;
  color: #fca5a5;
  background: rgba(248,113,113,0.1);
  text-decoration: underline wavy #f87171;
  text-underline-offset: 2px;
  cursor: help;
}
.fx-v14-tb-import-15826 .bad u {
  position: absolute;
  left: 0.45rem;
  bottom: 100%;
  z-index: 2;
  padding: 0.14rem 0.35rem;
  font-size: 0.54rem;
  text-decoration: none;
  color: #450a0a;
  background: #fca5a5;
  border-radius: 0.25rem;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  pointer-events: none;
}
.fx-v14-tb-import-15826 .bad u.rt { left: auto; right: 0.2rem; }
.fx-v14-tb-import-15826 .bad:hover u { opacity: 1; transform: translateY(-2px); }
.fx-v14-tb-import-15826 .g > span:last-child, .fx-v14-tb-import-15826 .g > span:nth-last-child(2), .fx-v14-tb-import-15826 .g > span:nth-last-child(3) { border-bottom: none; }
import-error-grid-15827.html
<div class="fx-v14-tb-import-15826">
  <div class="bn"><i>!</i>2 cells need fixing before import</div>
  <div class="g">
    <span class="h">Name</span>
    <span class="h">Signed</span>
    <span class="h">Seats</span>
    <span>Atlas Ltd</span>
    <span>2026-04-11</span>
    <span>24</span>
    <span>Northwind</span>
    <span class="bad">11 Apr<u>not ISO 8601</u></span>
    <span>8</span>
    <span>Cobalt</span>
    <span>2026-02-02</span>
    <span class="bad">many<u class="rt">not a number</u></span>
  </div>
</div>

What do I do with this?

  1. Put import-error-grid-15827.css anywhere your page already loads CSS from — in Next.js that is app/globals.css, or any stylesheet with a <link> in your HTML.
  2. Then put the class on the element you want it on: <button class="fx-v14-tb-import-15826">. The CSS does nothing until a class name in it matches something on the page.
  • Link the stylesheet, then paste the markup wherever you need it.
npx hoverlab add import-error-grid-15827

What's included

  • The markup and the stylesheet, in whichever framework you pick
  • No runtime dependencies

Works with

  • React
  • Vue
  • Svelte
  • Tailwind
  • styled-components
  • Plain CSS

npx hoverlab add import-error-grid-15827

Or over MCP, from your editor's agent — no account needed.

License

Free to read, copy and install, for personal and non-commercial projects. Shipping it in client work or a paid product needs Pro ($79 once). The source lands in your repo and stops being ours — no attribution, nothing to upgrade.

Was this useful?

Motion safety

Static estimate, read from the CSS

Reduced motion
Brief motion, no guard

Animates briefly or on interaction. Only looping motion gets a guard in this catalog; copy the one from the Insights tab if this ships on a critical path.

What it animates
Compositor only

Only transform, opacity or filter: the GPU can run it without re-laying-out or repainting the page.

Flashing (WCAG 2.3.1)
No flashing found

No repeating change in opacity, colour or brightness large enough to count as a flash.

Layout shift (CLS)
No shift expected

Nothing it animates moves or resizes the box in flow. A category from the CSS, not a measurement for this effect.

Every row is read from the shipped CSS. Only a figure marked measured came from a browser. Customizing the speed changes the timing, so recheck a customized copy. How it is computed

33 more effects in Tables & Data Grids

All of them free to read, copy and install — no account, no locked tiles, no watermarked preview. The whole catalog is open, and so are the API and the CLI.

Browse Tables & Data Grids

Shipping one commercially

Copying the code is free. Putting it in client work or a paid product is what Pro is for — the licence, not the access.

  • A commercial licence for everything in the catalog
  • Unlimited bundle exports, in Vue, Svelte and Tailwind
  • One payment — no subscription, nothing to renew
Pro — $79 once

7 variations of Import Error Grid

Finished looks, each one a position in the customizer above. Copy any of them, or open it and keep moving the sliders.