请选择Easing缓动效果... linear easeInSine easeOutSine easeInOutSine easeInQuad easeOutQuad easeInOutQuad easeInCubic easeOutCubic easeInOutCubic easeInQuart easeOutQuart easeInOutQuart easeInQuint easeOutQuint easeInOutQuint easeInExpo easeOutExpo easeInOutExpo easeInCirc easeOutCirc easeInOutCirc easeInBack easeOutBack easeInOutBack easeInElastic easeOutElastic easeInOutElastic easeInBounce easeOutBounce easeInOutBounce