.mouse_down{transition:all .15s ease-out;transform:scale(.9);-webkit-transform:scale(.9);-moz-transform:scale(.9);-ms-transform:scale(.9);-o-transform:scale(.9);-webkit-transition:all .15s ease-out;-moz-transition:all .15s ease-out;-ms-transition:all .15s ease-out;-o-transition:all .15s ease-out}