spinner.css

section {
  height: 110px;
  float: left;
  width: 50%; 
  position: relative;
}

.spinner {
  width: 50px;
  height: 50px;
  border-radius: 100%;
  margin: auto;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: auto;
}

.model-1 {
  background: #fff;
}
.model-1 .spinner {
  color: #f00;
  -webkit-animation: color-bubble 2s linear 0s infinite;
  animation: color-bubble 2s linear 0s infinite;
}
.model-1 .spinner:after, .model-1 .spinner:before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  border-radius: 100%;
  box-shadow: 0 0 0 3px;
  -webkit-animation: spinner-bubble 1.3s linear 0s infinite;
  animation: spinner-bubble 1.3s linear 0s infinite;
  margin: auto;
  width: 10px;
  height: 10px;
  opacity: 0;
}
.model-1 .spinner:before {
  -webkit-animation: spinner-bubble 1.3s linear 2s infinite;
  animation: spinner-bubble 1.3s linear 2s infinite;
}