[osrec]

Not if you want to adjust your views to different screen sizes and types.

[danjac]

Here you go:

https://developer.mozilla.org/en-US/docs/Web/CSS/Media_Queri...

[osrec]

In the wild, media queries are simply not enough. Often you need some JavaScript to really make things workable on smaller screens.

[jhgb]

Why couldn't the client provide information to the server for selecting the appropriate HTML and CSS code for that particular client?

[danjac]

"Some Javascript" != SPA.