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Add image aspect ratio to placeholders #54

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Add image aspect ratio to placeholders #54

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@davidpede davidpede commented Apr 12, 2018 •
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Very helpful when using CSS solutions like: https://css-tricks.com/aspect-ratio-boxes/ to size dynamic width image containers and (or) lazy loading images. Example:

<html>
  <head>
    <style>
      .lazy-container {
        background-color: #C5C7C8;
        display: block;
        position: relative;
        height: 0;
        padding-top: 55.3%; //default
      }
      .lazy-container img {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
      }
    </style>
  </head>
  <body>
    [[pthumb? &input=`[[*image]]` &options=`w=200` &toPlaceholder=`thumb`]]
    <div class="column" style="width: 20%;"> //can be any width
      <a href="#" class="lazy-container" style="padding-top: [[+thumb.ratio]]%;">
        <img class="lazy" data-src="[[+thumb]]"> //remove 'data-' to view image
      </a>
    </div>
  </body>
</html>

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