<div class="path">
  <img src="https://www.w3cplus.com/sites/default/files/blogs/2015/1507/logo_w3cplus.png" class="avatar" />
</div>

@keyframes spin {
    to { transform: rotate(1turn); }
}
.avatar {
    animation: spin 3s infinite linear;
    transform-origin: 50% 150px; /* 150px = path radius */
}
.path {
	width: 300px; 
  height: 300px;
	padding: 20px;
	border-radius: 50%;
	background: #fb3;
  margin: 50px auto;
}
.avatar {
	width: 50px;
	margin: 0 auto;
	border-radius: 50%;
	overflow: hidden;
  display: block;
}