鉴于自己看了好几次animation，都没有记住缩写时候的顺序，现在先放到这块备忘下
animation-duration:动画时长
animation-timing-funtion: 元素根据时间的推进来改变属性值的变换速率 linear ease ;ease-in ease-out ease-in-out cubic-bezier
animation-delay:动画延后时间
animation-iteration-count；默认为1 infinite 数值
animation-diretion；normal alternate
animation:[<animation-name> || <animation-duration> || <animation-timing-function> || <animation-delay> || <animation-iteration-count> || <animation-direction>] [, [<animation-name> || <animation-duration> || <animation-timing-function> || <animation-delay> || <animation-iteration-count> || <animation-direction>] ]*