.loading-spiner {
  width: 100px;
  height: 100px;

  position: absolute;
  top: calc(50% - 70px);
  left: calc(50% - 70px);
}

.loading-spiner-holder {
  width: 100vw;
  height: 100vh;
  /*border-radius: 50%;*/
  /*background-color: #9c9;*/
  background-color: #c6c4c4;
  /*border: solid 3px #fff;*/
  opacity: 0.6;
  position:fixed;
  top: 0;
  left: 0;
  z-index: 1000;  
  /*-webkit-animation: bounce 2.0s infinite ease-in-out;
  animation: bounce 2.0s infinite ease-in-out;*/
}