.center-container {
    position: relative;
}
  
.absolute-center {
    width: 50%;
    height: 50%;
    overflow: auto;
    margin: auto;
    position: absolute;
    top: 0; left: 0; bottom: 0; right: 0;
}



  
  .bottomleft {
    position: absolute;
    bottom: 8px;
    left: 16px;
    font-size: 18px;
    margin-left: 50px;
    margin-bottom: 50px;
  }
  
/* https://codepen.io/shshaw/full/gEiDt */