CSS Tip

A CSS-only 3D Zig-Zag edge

Create a nice 3D Zig-Zag edge with a simple code:

A CSS-only 3D Zig Zag edge

.bottom {
  --_m: from 45deg at bottom;
  padding-bottom: var(--s);
  background: 
    conic-gradient(var(--_m) var(--d) left 50%,
      #0004 135deg,#0009 0 270deg,#0000 0) 
    50%/var(--s);
}
.top {
  --_m: from -135deg at top;
  padding-top: var(--s);
  background: 
    conic-gradient(var(--_m) var(--d) left 50%,
      #0009 135deg,#0004 0 270deg,#0000 0) 
    50%/var(--s);
}
.top,
.bottom {
  --s: 81px; /* control the size */
  --d: 20px; /* control the depth */
  
  mask: conic-gradient(var(--_m),#0000 75%,#000 0) 50%/var(--s);
  background-color: #ED303C; /* the main color */
}

See the Pen CSS-only 3D zig-zag edge by Temani Afif (@t_afif) on CodePen.

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