* {
  margin: 0px;
  padding: 0px;
  box-sizing: border-box;
}

body { height: 20000px; }

.photo {
  background: #F44336;
  height: 300px;
  width: 23vw;
  margin:10px 1vw;
  float: left;
  transition: all 0.3s ease;
  opacity: 0;
  transform: rotate(45deg)scale(0)translateY(100%);
   box-shadow: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
}

.photo.is-show {
  opacity: 1;
  transform: rotate(0deg)scale(1)translateY(0);
}