isotope/test/tests.css

* {
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
}

body {
  font-family: sans-serif;
}

.container {
  background: #EEE;
  width: 180px;
  margin-bottom: 20px;
  position: relative;
}

.container:after {
  content: '';
  display: block;
  clear: both;
}

.item {
  width:  60px;
  height: 30px;
  float: left;
  border: 1px solid;
  background: #3BF;
}

.item.w2 { width: 120px; }
.item.w3 { width: 180px; }

.item.h2 { height:  50px; }
.item.h3 { height:  70px; }
.item.h4 { height:  90px; }
.item.h5 { height: 110px; }

.stamp {
  background: red;
  opacity: 0.75;
  position: absolute;
  border: 1px solid;
}

/* ---- stamp ---- */

.has-stamp .item { width: 45px; }

/* stout, in the middle */
.has-stamp .stamp1 {
  width: 40px;
  height: 30px;
}

/* really wide */
.has-stamp .stamp2 {
  width: 200px;
  height: 20px;
}