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

/* ---- isotope ---- */

.isotope {
  max-width: 1170px;
}

/* clear fix */
.isotope:after {
  content: '';
  display: block;
  clear: both;
}

/* ---- .item ---- */