I'm confused. What are you trying to paste into? Is this a WYSIWYG form for creating a web page or something else?
As far as dividing brackets or tags from each other, I generally avoid doing that but it can be done. The computer sees a blank space as a blank space in many languages, and the same goes for returns (it ignores them) unless the language you're coding in specifically uses spaces and returns and recognizes them as such.
Keep in mind though syntax. You can make the code look neater but it must follow syntax or it won't parse right when it's loaded into a web browser. That can make strange things happen. It's just like the infamous semicolon in some languages. One that's out of place or is missing ruins everything.
