<svg width="500" height="150">
  <rect id="deepPink-rectangle" width="50" height="50" x="50" y="50" fill="deepPink"  transform="rotate(0) translate(0 0)"/>
  
  <animateTransform 
           xlink:href="#deepPink-rectangle"
           attributeName="transform" 
           attributeType="XML"
           type="rotate"
           from="0 75 75"
           to="360 75 75" 
           dur="2s"
           begin="0s"
           repeatCount="indefinite"
           fill="freeze"
                    
           />
</svg>

svg {
  border: 3px solid #eee;
  display: block;
  margin: 1em auto;
}
p {
  color: #aaa;
  text-align: center;
  margin: 2em 0;
}