Saw

#page_header .right {
   -webkit-animation: rotation 10s infinite linear;
   animation: rotation 10s infinite linear;
   background: url("http://ipic.su/a6UXZ.png") transparent !important;
   display: block;
   height: 160px;
   position: fixed;
   right: -35px;
   top: -35px;
   width: 160px;
   z-index: 0;
}

@keyframes rotation {
    from {transform: rotate(0deg);}
    to   {transform: rotate(359deg);}
}
@-webkit-keyframes rotation {
    from {-webkit-transform: rotate(0deg);}
    to   {-webkit-transform: rotate(359deg);}
}