.popupshow {
  display: none;
}
.popupshow .overlay {
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,.66);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9;
}
.popupshow .img-show{
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  z-index: 99;
}
.popupshow .img-show img{
  max-width: 750px;
  max-height: 750px;
  position: relative;
  top: 0;
  left: 0;
}
.popupshow span{
  cursor: pointer;
}
.popupshow .exit {
  position: fixed;
  top: 30px;
  right: 20px;
  z-index: 999;
  width: 45px;
  z-index: 99999;
}
.popupshow .prev {
  position: fixed;
  top: 45%;
  left: 30px;
  z-index: 999;
  width: 35px;
  z-index: 99999;
}
.popupshow .next {
  position: fixed;
  top: 45%;
  right: 30px;
  z-index: 999;
  width: 35px;
  z-index: 99999;
}