css 无限循环旋转

	@keyframes rotate{
    0%{
        transform: rotate(0);
      }
    50%{
    	transform:rotate(200deg);
    }
    100%{
         transform: rotate(0);
    	}
	}

.rotate{
    transition: 0.5s;
    transform-origin: 30px 30px;  
    animation: rotate 10s linear infinite;  /*开始动画后无限循环，用来控制rotate*/
}