.ri-grid {
  margin: 30px auto 30px;
  position: relative;
  height: auto;
}

.ri-grid ul {
  list-style: none;
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
}

/* Clear floats by Nicolas Gallagher: http://nicolasgallagher.com/micro-clearfix-hack/ */

.ri-grid ul:before,
.ri-grid ul:after {
  content: '';
  display: table;
}

.ri-grid ul:after {
  clear: both;
}

.ri-grid ul {
  zoom: 1; /* For IE 6/7 (trigger hasLayout) */
}

.ri-grid ul li {
  -webkit-perspective: 400px;
  -moz-perspective: 400px;
  -o-perspective: 400px;
  -ms-perspective: 400px;
  perspective: 400px;
  margin: 0;
  padding: 0;
  float: left;
  position: relative;
  display: block;
  overflow: hidden;
  background: #000;
}

.ri-grid ul li a {
  display: block;
  outline: none;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  -moz-backface-visibility: hidden;
  -o-backface-visibility: hidden;
  -ms-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-transform-style: preserve-3d;
  -moz-transform-style: preserve-3d;
  -o-transform-style: preserve-3d;
  -ms-transform-style: preserve-3d;
  transform-style: preserve-3d;
  -webkit-background-size: 100% 100%;
  -moz-background-size: 100% 100%;
  background-size: 100% 100%;
  background-position: center center;
  background-repeat: no-repeat;
  background-color: #333;
  -webkit-box-sizing: content-box;
  -moz-box-sizing: content-box;
  box-sizing: content-box;
}

/* Grid wrapper sizes */
.ri-grid-size-1 {
  width: 55%;
}
.ri-grid-size-2 {
  width: 100%;
}
.ri-grid-size-3 {
  width: 100%;
  margin-top: 0px;
}

/* Shadow style */
.ri-shadow:after,
.ri-shadow:before {
  content: '';
  position: absolute;
  z-index: -2;
  bottom: 15px;
  left: 10px;
  width: 50%;
  height: 20%;
  max-width: 300px;
  max-height: 100px;
  box-shadow: 0 15px 10px rgba(0, 0, 0, 0.7);
  -webkit-transform: rotate(-3deg);
  -moz-transform: rotate(-3deg);
  -ms-transform: rotate(-3deg);
  -o-transform: rotate(-3deg);
  transform: rotate(-3deg);
}
.ri-shadow:after {
  right: 10px;
  left: auto;
  -webkit-transform: rotate(3deg);
  -moz-transform: rotate(3deg);
  -ms-transform: rotate(3deg);
  -o-transform: rotate(3deg);
  transform: rotate(3deg);
}

.ri-grid-loading:after,
.ri-grid-loading:before {
  display: none;
}

.ri-loading-image {
  display: none;
}

.ri-grid-loading .ri-loading-image {
  position: relative;
  width: 30px;
  height: 30px;
  left: 50%;
  margin: 100px 0 0 -15px;
  display: block;
}