.img1 {
    position: relative;
    z-index: 1;
    top: -300px;
    width:300px;
    height:600px;
  }
  
  .img2 {
    position: relative;
    z-index: 3;
    top: 000px;
    left: -12px;
    width:400px;
    height:200px;
  }
  .img3 {
    position: relative;
    z-index: 2;
    top: -500px;
    bottom: 150px;
    width:300px;
    height:150px;
    left: -12px;
  }

  .cover {
    width:280px;
    height:280px;
  }