.waiting_div {
  position: relative;
}

.waiting_overlay {
  position: absolute;

  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}

.spinner_div {
  position: absolute;

  top: 50%;
  left: 50%;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 5px solid #FFF;
    border-bottom-color: #335EFF;
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
    }

@keyframes rotation {
	0% {
		tranform: rotate(0deg);
	}
	100% {
		transform: rotate(360deg);
	}
}