.loader_overlay{
    /*position: absolute;*/
    z-index: 90;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255);
 }

img.loader {
    -webkit-animation: rotation 2s infinite linear;
  }
  
  @-webkit-keyframes rotation {
    from {
        -webkit-transform: rotate(0deg);
    }
    to {
        -webkit-transform: rotate(359deg);
    }
  }