Posts tagged with "Css"

• 2025.08.11

  Writing collapsible inline footnotes in Hugo with Markdown

  I use Hugo as the static site builder for my blog. I love it because it’s fast (blisteringly fast) and for the most part it just gets out of the way.

  However, Hugo’s support for customising the rendering of Markdown into HTML is … lacking, to say the least. Hugo uses Goldmark under the hood, which supports Extensions, but Hugo doesn’t natively plug in to those. I’d previously been using a Hugo shortcode to wrap around some arbitrary Markdown and convert it into a footnote HTML:

• 2025.08.10

  A neat CSS trick to add favicons to website links

  I discovered a neat CSS trick that automatically lets you prepend an SVG ‘favicon’ before URLs linking to a particular domain. For example, for links to github.com, you can embed an octocat SVG using an attribute selector:

  a[href*="github.com"]::before {
      content: "";
      display: inline-block;
      width: 1em;
      height: 1em;
      margin-right: 0.35em;
      vertical-align: -0.15em;
      background: currentColor;
      mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill="currentColor" d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82a7.62 7.62 0 0 1 2-.27c.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0 0 16 8c0-4.42-3.58-8-8-8Z"/></svg>') center/contain no-repeat;
  }
  

  We apply the favicon as a CSS mask to properly render the transparent components of the logo against the background.

• 2025.05.24

  View Transition Web API

  The (relatively) new View Transition API is really slick! Simply adding the following CSS to my blog enabled same-document view transitions - no JavaScript required!

  Go ahead and give it a try now! Simply click a link to another page on this site and you should observe a seamless transition occur.

  @view-transition {
    navigation: auto;
  }
  

  If you want to add even more pizzazz, you can declare CSS keyframe animations:

  /* Create a custom animation */
  @keyframes move-out {
    from {
      transform: translateX(0%);
    }
  
    to {
      transform: translateX(-100%);
    }
  }
  
  @keyframes move-in {
    from {
      transform: translateX(100%);
    }
  
    to {
      transform: translateX(0%);
    }
  }
  
  /* Apply the custom animation to the old and new page states */
  ::view-transition-old(root) {
    animation: 0.4s ease-in both move-out;
  }
  
  ::view-transition-new(root) {
    animation: 0.4s ease-in both move-in;
  }
  

  For a blog like this there’s no real use, but for more complex web applications, the View Transition API is a really seamless way to integrate smooth transitions.