<div class="loading">
  <div class="loading-1"></div>
  <div class="loading-2"></div>
  <div class="loading-3"></div>
  <div class="loading-4"></div>
  <div class="loading-5"></div>
  <div class="loading-6"></div>
  <div class="loading-7"></div>
  <div class="loading-8"></div>
  <div class="loading-9"></div>
  <div class="loading-10"></div>
</div>

body { background-color: #333; }
.loading { 
  position: fixed;
  float: left;
  top: 50%;
  left: 50%;
  height: 100px;
  padding: 0px;
  width: 200px;
  margin-top: -50px;
  margin-left: -70px;
}
@keyframes loading {
  0% { border-top-color: #d13632; }
  11% { border-top-color: #e2571e; }
  22% { border-top-color: #E09128; }
  33% { border-top-color: #ffe400; }
  44% { border-top-color: #7dd132; }
  50% { height: 100px; margin-top: 0px; }
  55% { border-top-color: #32D152; }
  66% { border-top-color: #32d15b; }
  77% { border-top-color: #32bcd1; }
  88% { border-top-color: #323ad1; }
  99% { border-top-color: #cb32d1; }
  100% { border-top-color: #cb32d1; }
}
/*@-moz-keyframes loading {
  50% { height: 100px; margin-top: 0px; }
}
@-o-keyframes loading {
  50% { height: 100px; margin-top: 0px; }
}
@keyframes loading {
  50% { height: 100px; margin-top: 0px; }
}*/
@mixin inner() {
  height: 10px;
  width: 10px;
  background-color: #fff;
  display: inline-block;
  margin-top: 90px;
  -webkit-animation: loading 2.5s infinite;
  -moz-animation: loading 2.5s infinite;
  -o-animation: loading 2.5s infinite;
  animation: loading 2.5s infinite;
  border-top-left-radius: 2px;
  border-top-right-radius: 2px;
  border-top: 5px solid #333;
}
@mixin loading() {
	@for $i from 1 through 10 {
		.loading-#{$i} { @include inner(); -webkit-animation-delay: $i/4+s; animation-delay: $i/4+s; }
	}
}
.loading { @include loading(); }