.div_loader{
    /* background-color: rgba(256,256,256,0.5);
    z-index: 10;
    position: absolute;
    width: 100%;
    height: 100% */
  
      position: fixed;
      left: 0px;
      top: 0px;
      width: 100%;
      height: 100%;
      z-index: 9999;
      background: rgb(249,249,249); 
      opacity: .8;
  
  }
  
  .water{
    width:400px;
    height: 400px;
    background-color: skyblue;
    border-radius: 50%;
    position: absolute;
    box-shadow: inset 0 0 30px 0 rgba(0,0,0,.5), 0 4px 10px 0 rgba(0,0,0,.5);
    overflow: hidden;
    z-index: -99999999999999;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
  }
  .water:before, .water:after{
    content:'';
    position: absolute;
    width:400px;
    height: 400px;
    top:-150px;
    background-color: #fff;
  }
  .water:before{
    border-radius: 45%;
    background:rgba(255,255,255,.7);
    animation:wave 5s linear infinite;
  }
  .water:after{
    border-radius: 35%;
    background:rgba(255,255,255,.3);
    animation:wave 5s linear infinite;
  }
  @keyframes wave{
    0%{
        transform: rotate(0);
    }
    100%{
        transform: rotate(360deg);
    }
  }