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HTML-CSS: Polka dot background pattern

HTML-CSS : Exercise-28 with Solution

Using HTML, CSS creates a polka dot background pattern.

  • Use background-color to set a black background.
  • Use background-image with two radial-gradient() values to create two dots.
  • Use background-size to specify the pattern's size. Use background-position to appropriately place the two gradients.
  • Note: The fixed height and width of the element is for demonstration purposes only.

HTML Code:

<!--License: https://bit.ly/3GjrtVF-->
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Using HTML, CSS creates a polka dot background pattern</title>
</head>
<body>
<div class="w3r-dot">
</div>
</body>
</html>

CSS Code:

.w3r-dot {
  width: 240px;
  height: 240px;
  background-color: #ccc;
  background-image: radial-gradient(#000 10%, transparent 11%),
    radial-gradient(#e53935 10%, transparent 11%);
  background-size: 60px 60px;
  background-position: 0 0, 30px 30px;
  background-repeat: repeat;
}

HTML-CSS Editor:

See the Pen html-css-practical-exercises by w3resource (@w3resource) on CodePen.


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HTML-CSS: Tips of the Day

How to get CSS to select ID that begins with a string ?

[id^=product]

^= indicates "starts with". Conversely, $= indicates "ends with".

The symbols are actually borrowed from Regex syntax, where ^ and $ mean "start of string" and "end of string" respectively.

Ref: https://bit.ly/3rSZ2t7