Animated Google Loader with SVG and CSS

A Google inspired loading spinner / loader animating through four colors, built using SVG and CSS / CSS3.

How to use it:

Build the html structure for the loader with SVG circle element.

<div class="loader">
  <svg class="circular" viewBox="25 25 50 50">
    <circle class="path" cx="50" cy="50" r="20" fill="none" stroke-width="2" stroke-miterlimit="10"/>
  </svg>
</div>

The core CSS / CSS3 styles.

.loader {
  position: relative;
  margin: 0px auto;
  width: 100px;
}
.loader:before {
  content: '';
  display: block;
  padding-top: 100%;
}
.circular {
  -webkit-animation: rotate 2s linear infinite;
  animation: rotate 2s linear infinite;
  height: 100%;
  -webkit-transform-origin: center center;
  -ms-transform-origin: center center;
  transform-origin: center center;
  width: 100%;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
}
.path {
  stroke-dasharray: 1, 200;
  stroke-dashoffset: 0;
  -webkit-animation: dash 1.5s ease-in-out infinite, color 6s ease-in-out infinite;
  animation: dash 1.5s ease-in-out infinite, color 6s ease-in-out infinite;
  stroke-linecap: round;
}

Animate the loader.

@-webkit-keyframes 
rotate {  100% {
 -webkit-transform: rotate(360deg);
 transform: rotate(360deg);
}
}
@keyframes 
rotate {  100% {
 -webkit-transform: rotate(360deg);
 transform: rotate(360deg);
}
}
@-webkit-keyframes 
dash {  0% {
 stroke-dasharray: 1, 200;
 stroke-dashoffset: 0;
}
 50% {
 stroke-dasharray: 89, 200;
 stroke-dashoffset: -35;
}
 100% {
 stroke-dasharray: 89, 200;
 stroke-dashoffset: -124;
}
}
@keyframes 
dash {  0% {
 stroke-dasharray: 1, 200;
 stroke-dashoffset: 0;
}
 50% {
 stroke-dasharray: 89, 200;
 stroke-dashoffset: -35;
}
 100% {
 stroke-dasharray: 89, 200;
 stroke-dashoffset: -124;
}
}
@-webkit-keyframes 
color {  100%, 0% {
 stroke: #d62d20;
}
 40% {
 stroke: #0057e7;
}
 66% {
 stroke: #008744;
}
 80%, 90% {
 stroke: #ffa700;
}
}
@keyframes 
color {  100%, 0% {
 stroke: #d62d20;
}
 40% {
 stroke: #0057e7;
}
 66% {
 stroke: #008744;
}
 80%, 90% {
 stroke: #ffa700;
}
}