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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <div class="page-head--masthead">
</div>
            
          
!
            
              // Blurground:
// Create a blurry background image 
// using radial gradients as "pixel 
// blobs". Inspired by Harry Roberts'
// blog post: 
// https://csswizardry.com/2016/10/improving-perceived-performance-with-multiple-background-images
// WARNING: This is ridiculous

// 1. THE SOURCE IMAGE
// First you need to reduce your source 
// image to the desired size, using 
// Photoshop or similar. In this example 
// I've reduced this image: 
// https://csswizardry.com/img/css/masthead-large.jpg
// to 8x4 pixels. Use Photoshop's 
// inkdropper tool to record the colour 
// of each pixel, and list them in a
// a Sass list, like this:

$myColours: #9EA0A3, #9C9A97, #362F29, #15100D, #271E17, #241C17, #040201, #1C1C1C, #A9ABAC, #999999, #190E03, #000000, #6A4D44, #533C37, #000000, #141111, #AC9479, #746454, #0A0300, #3B3134, #715A60, #5C453E, #15100C, #0D0D0D, #A37A52, #49301A, #0D0D0D, #493B3A, #584D51, #624638, #1A0C06, #2A2A2C;

// I guess this bit could be automated
// using Node or ImageMagick or 
// something? I'll leave that job to
// someone smarter than me...

// Blurground will turn each pixel into 
// a radial gradient, or blob. So in 
// this example we'll end up with an 
// 8x4 grid of blobs.

// 2. THE FUNCTION
// $rowLength = number of blobs in width
// $columnLength = num. blobs in height
// $colours = your Sass list of colours
@function blurground($rowLength, $columnLength, $colours) {
  
  // Determines the size of each grid square
  $blobWidth: 100%/$rowLength;
  $blobHeight: 100%/$columnLength;
  
  // Centre-align each blob within its grid square
  $xOffset: $blobWidth/2;
  $yOffset: $blobHeight/2;
  
  // Size determines how much the blobs 
  // overlap: if size==width, no overlap
  $xSize: $blobWidth*2;
  $ySize: $blobHeight*2;
  
  // An empty string which will contain our CSS
  $result: "";
  
  // This code loops through each colour
  // in the list, creating a radial 
  // gradient (or blob) for each. We
  // know what number blob we're on, and
  // the size of our grid, so calculatin
  // calculating each blob's x & y
  // co-ordinates is just a math problem
  @for $currentBlob from 1 through length($colours) {
    
    // What row are we on? 
    $row: ceil($currentBlob/$rowLength);
    $const: $row - 1;
    
    $xPosition: (($currentBlob - ($rowLength * $const)) * $blobWidth) - $xOffset;
    $yPosition: ($blobHeight * $row) - $yOffset;
    $string: "radial-gradient(ellipse #{$xSize} #{$ySize} at #{$xPosition} #{$yPosition}, #{rgba(nth($colours,$currentBlob),1)}, #{rgba(nth($colours,$currentBlob),0)})";
    $separator: "";
    @if ($currentBlob != 1) {
      $separator: ",";
    }
    $result: $result + $separator + $string;
  }
  
  @return unquote($result);
}

// 3. USAGE
// That's it! Here's how you'd use 
// the function:
.page-head--masthead {
  background-image: blurground(8,4,$myColours);
  height: 426px;
}

// Thanks for reading!

// DISCLAIMER:
// This is just a thought experiment;
// I would never suggest anyone use
// this code in production. The CSS
// it produces could potentially be 
// much heavier than the source image, 
// therefore entirely missing the point 
// of Harry's initial blog post. It was
// fun to mess around with though :D
            
          
!
999px
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