Masonry - calc() sizing - fixed gutter, % column

index.html

<h1>Masonry - calc() sizing</h1>
<div class="masonry js-masonry"  data-masonry-options='{ "columnWidth": ".grid-sizer", "itemSelector": ".item", "gutter": 20 }'>
  <div class="grid-sizer"></div>
  <div class="item"></div>
  <div class="item w2 h2"></div>
  <div class="item h3"></div>
  <div class="item h2"></div>
  <div class="item w3"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item h2"></div>
  <div class="item w2 h3"></div>
  <div class="item"></div>
  <div class="item h2"></div>
  <div class="item"></div>
  <div class="item w2 h2"></div>
  <div class="item w2"></div>
  <div class="item"></div>
  <div class="item h2"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item h3"></div>
  <div class="item h2"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item h2"></div>
</div>

Masonry---calc()-sizing.markdown

Masonry - calc() sizing

A Pen by Alex Kale on CodePen.

License.

script.js

// http://masonry.desandro.com/masonry.pkgd.js added as external resource

style.css

* {
  box-sizing: border-box;
}

body { font-family: sans-serif; }

.masonry {
  background: #EEE;
  max-width: 640px;
}

.masonry .item,
.masonry .grid-sizer {
  width:  calc( ( 100% - 60px ) / 4 );
  height: 60px;
  float: left;
  background: #D26;
  border: 2px solid #333;
  border-color: hsla(0, 0%, 0%, 0.5);
  border-radius: 5px;
  margin-bottom: 20px;
}

.item.w2 { width:  calc( ( 100% - 60px ) * ( 2 / 4 ) + 20px ); }
.item.w3 { width:  100%; }

.item.h2 { height: 100px; }
.item.h3 { height: 130px; }
.item.h4 { height: 180px; }

thanks man, this is excellent!

if I work out a good IE8 polyfill and/or fallback I'll add it here later, seriously great gist mate nice one.