.simple-loader {
  display: inline-block;
  width: 15px;
  height: 15px;
  border-radius: 100%;
  border-width: 2px;
  border-style: solid;
  border-left-color: transparent;
  border-right-color: transparent;
  animation: rotate 1.5s linear 0s infinite;
  color: #afafaf;
  vertical-align: middle;
}