.logo a:hover #halfcircle1 {
-webkit-animation: animatelogo1 .5s ease infinite;
animation: animatelogo1 .5s ease infinite;
-webkit-transform-origin: 50% 50%;
-moz-transform-origin: 50% 50%;
-o-transform-origin: 50% 50%;
transform-origin: 50% 50%;
}