单个容器上的自适应HTML5视频和Canvas

Question

Canvas should be resized when it comes to mobile browser and their points but it's not working?

//这是用于制作响应式画布的代码

  @media screen and (max-width: 360px) { 

     .canvasmobile { 
             width:100% !important;
             height:100% !important; 

        } 
        }