Dotted background pattern

On this blog, you might have noticed a special dotted pattern I use to emphasize headings. This design adds a unique touch, but it does present some CSS implementation challenges.

Solutions

I’ve come up with two creative ideas, both relying on repeating gradients.

Repeating conic-gradient

This approach involves a 3/4 spin with a transparent color, followed by a single 1/4 spin with the dot color. Problem: The only limitation is that the distance between the dots can’t exceed the size of the dots themselves.

.dotted {
  background: conic-gradient(
	from 0deg,
	var(--color-background) 0% 75%,
	var(--color-title) 0%
  );
  background-size: 1rem 1rem;
  background-repeat: round;
}

Repeating linear-gradient

Here, two overlapping linear gradients are used to stack on top of each other. This effectively masks out only the dots themselves. Problem: The only challenge is to carefully manage the overall height to avoid dot overflow.

.dotted {
background: repeating-linear-gradient(
	90deg,
	transparent 0,
	transparent var(--_dot-size),
	var(--color-background) var(--_edge-end),
	var(--color-background) var(--_gardient-end)
  ),
  repeating-linear-gradient(
	180deg,
	var(--color-title) 0,
	var(--color-title) var(--_dot-size),
	transparent var(--_edge-end),
	transparent var(--_gardient-end)
  ),
  var(--color-background);
}

Border image

There is also another less popular option which utilizes border-image. The idea is that you can draw a pattern and pass it as an image (PNG or SVG) in Base64 format. Theres a very interesting tool to draw borders called https://maxbittker.github.io/broider/. Problem: The color of the dots are backed into the image.