.loader {
  border: 10px solid #f3f3f3;
  border-radius: 50%;
  border-top: 10px solid blue;
  border-bottom: 10px solid white;
  border-right: 10px solid white;
  border-left: 10px solid white;
  width: 80px;
  height: 80px;
  -webkit-animation: spin 5s linear infinite;
  animation: spin 5s linear infinite;
}

.loader2 {
  border: 10px solid #f3f3f3;
  border-radius: 50%;
  border-right: 10px solid white;
  border-left: 10px solid white;
  border-top: 10px solid white;
  border-bottom: 10px solid red;
  width: 50px;
  height: 50px;
  -webkit-animation: spin2 5s linear infinite;
  animation: spin2 5s linear infinite;
}

@-webkit-keyframes spin2 {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}

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