我有以下代码:http://jsfiddle.net/odj8v0x4/.functionstopGlobe(){$('.mapfront').removeClass('mapfront-anim');$('.mapback').removeClass('mapback-anim');}functionstartGlobe(){$('.mapfront').addClass('mapfront-anim');$('.mapback').addClass('mapback-anim');}@keyframesmapfront_spin{0%{background-position:140