Concrete Slab CSS Button

Free29 lines · no JS · WCAG AAA 7.0 · light-safe

Open in Studio

Theme

A real <button> carrying .btn-concrete-slab — the preview is the stylesheet, not a picture of it.

States

default

hover

focus-visible

active

disabled

not declared

.btn-concrete-slab {
  display: inline-block;
  padding: 14px 30px;
  border: none;
  border-top: 6px solid #4b5563;
  border-radius: 0;
  background: #9ca3af;
  color: #111827;
  font-family: "Courier New", Courier, monospace;
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  cursor: pointer;
  box-shadow: inset 0 -4px 0 rgba(17, 24, 39, 0.25);
  transition: background 0.15s ease, letter-spacing 0.15s ease;
}
.btn-concrete-slab:hover {
  background: #8b929c;
  letter-spacing: 0.2em;
}
.btn-concrete-slab:active {
  background: #6b7280;
  box-shadow: inset 0 4px 0 rgba(17, 24, 39, 0.3);
}
.btn-concrete-slab:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

Self-contained · MIT · no build step.btn-concrete-slab

BrutalistSquareText FX

Implementation notes

About the Concrete Slab CSS button

Concrete Slab uses direct typography, strong borders and deliberately exposed structure. Its square geometry creates a compact, precise control. The text fx details are included in the copy-paste CSS.

Usage

<button class="btn-concrete-slab">Button</button>

Pair it with the CSS tab above — the class is self-contained.

Before shipping: keep the semantic button element, verify contrast on your actual background and add a visible:focus-visible state. If you retain motion, include a prefers-reduced-motion override.

Built with: HTML + plain CSS
Shape: Square
Exports: CSS, Tailwind, React
License: MIT · commercial use

Complete the look

Build the interface around this button

We matched its palette, surface, geometry and motion to a complete UI system — like composing an outfit, not browsing unrelated parts.

Style DNA · v1

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