说明：  CSS3实现动画开关按钮代码基于纯CSS3实现，可以使用鼠标来控制开关滑动，按钮开关滑动时带有很炫的动画和渐变效果。
(CSS3 animated switch button code based on pure CSS3 realize, you can use the mouse to control the switch slide with flashy animation and slide transition effects button switch)