If you have to interface with HTML or CSS directly and frequently while writing your application, then you want to make sure your HTML and CSS are super clean and maintainable. But, as PG has said before, HTML can be treated like object code! There was once a time when everyone had to write super clean and maintainable assembly code, but now you rely on a compiler.
Ever look at compiler generated assembly code? It's quite scary!
I find that a shortsighted attitude by PG. Web pages shouldn't be just a black box to present to the user. They should be structured documents that is flexible and malleable, so that the user or third parties can filter, adapt and enhance the content.
In this case it's naive redundant and inefficient object code. Tables and BR unless you're targetting pre-css browsers aren't really necessary. But I can be wrong. Anyway it's still more work and output that needed.
If you have to interface with HTML or CSS directly and frequently while writing your application, then you want to make sure your HTML and CSS are super clean and maintainable. But, as PG has said before, HTML can be treated like object code! There was once a time when everyone had to write super clean and maintainable assembly code, but now you rely on a compiler.
Ever look at compiler generated assembly code? It's quite scary!