.gallery-part-wrap {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    height: 638px;
    /*padding-top: 100px;*/
    /*padding-bottom: 100px;*/
}

.pad_left5 {
    padding-left: 5px;
    box-sizing: border-box;
}

.pad_right5 {
    padding-right: 5px;
    box-sizing: border-box;
}

.pad_top5 {
    padding-top: 5px;
    box-sizing: border-box;
}

.pad_bottom5 {
    padding-bottom: 5px;
    box-sizing: border-box;
}

.gallery-grid-img-wrap {
    height: 100%;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
}

.gallery66 {
    height: 66.6%;
}

.gallery33 {
    height: 33.3%;
}
.gallery-top,.gallery-bottom{
    position: absolute;
    height: 100%;
    width: 100%;
}
.gallery-top{
    /*display: none;*/
}

@-webkit-keyframes turn-over {
  to {
    -webkit-transform: rotateY(-180deg);
            transform: rotateY(-180deg);
  }
}

@keyframes turn-over {
  to {
    -webkit-transform: rotateY(-180deg);
            transform: rotateY(-180deg);
  }
}
@-webkit-keyframes turn-over2 {
  to {
    -webkit-transform: rotateY(0deg);
            transform: rotateY(0deg);
  }
}
@keyframes turn-over2 {
  to {
    -webkit-transform: rotateY(0deg);
            transform: rotateY(0deg);
  }
}