Deploy ionic mobile application as a Web application

Hi,
I want to provide different CSS for ionic2 mobile and web. For example: list differs in width and height for mobile and web application, list font and alignment is different for mobile and web.

Please let me know how to achieve this for ionic2 mobile application.

Thanks,

Are you looking for https://ionicframework.com/docs/api/platform/Platform/?

I can check platform info with these API’s. After checking of platform, I need to update css for Web app.
For example: We can have different .css files for mobile and web application.(Mobile and Web application UI are completely different from each other)
Now, how to load the particular css based on specific platform at run time. I am using ionic2 with angular typescript code. Can I load css through code at run time according to device/browser?