@keyframes spinner{to{transform:rotate(360deg)}}.spinner{box-sizing:border-box;background-image:url(https://s3.amazonaws.com/static.synapse.org/images/synapse-logo.svg);background-repeat:no-repeat;background-size:20px 20px;width:20px;height:20px;animation:1s linear infinite spinner;display:inline-block;position:relative}.spinner.white{background-image:url(https://s3.amazonaws.com/static.synapse.org/images/synapse-logo-white.svg)}