.imgContainer {
	position: relative;
	height: 200px; /* not part of solution */
  text-align: center;
  margin: 0 auto;
}

.loader {
  border: 16px solid #f3f3f3; /* Light grey */
  border-top: 16px solid #3498db; /* Blue */
  border-radius: 50%;
  width: 100px;
  height: 100px;
  animation: spin 2s linear infinite;
  position: absolute;
  margin: 0 auto;
	top: 5%;
	left: 38%;
	transform: translate(-50%, -50%);
	text-align: center; /* not part of solution */
}

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