.shutter {
  position: relative;
  overflow: hidden;
}
.shutter-img {
  z-index: 1;
}
.shutter-img,
.shutter-img a {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
}
.shutter-img a > img {
  width: 100%;
  height: 100%;
}
.shutter-img .created {
  overflow: hidden;
  position: absolute;
  z-index: 20;
}
.shutter-btn {}
.shutter-btn li {
  position: absolute;
  z-index: 2;
  top: 50%;
  width: 41px;
  height: 60px;
  margin-top: -25px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.4s;
}
.shutter-btn li.prev {
  left: 20px;
  background: url(../images/pin_left.png) no-repeat 0 bottom;
}
.shutter-btn li.next {
  right: 20px;
  background: url(../images/pin_right.png) no-repeat 0 bottom;
}
.shutter:hover .shutter-btn li{
  opacity: 1;
}
.shutter-btn li:hover{
  background-position-y:top ;
}
.shutter-desc {
  position: absolute;
  z-index: 2;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 36px;
  background: url(../images/shutter_shadow.png) repeat;
}
.shutter-desc p {
  padding-left: 20px;
  line-height: 36px;
  color: #fff;
  font-size: 14px;
}