<style>
.player{
-webkit-mask-image: -webkit-radial-gradient(circle, white 100%, black 100%); /*ios 7 border-radius-bug */
-webkit-transform: rotate(0.000001deg); /*mac os 10.6 safari 5 border-radius-bug */
-webkit-border-radius: 15px;
-moz-border-radius: 15px;
border-radius: 15px;
overflow: hidden;
}
</style>