Answer
Web design is important because it impacts how your audience perceives your brand. The impression you make on them can either get them to remain on your page and learn about your business or leave your page and turn to a competitor. A good web design helps you keep your leads on your page.
Answer: close adjective, adverb, close also means near
Well, most slang words that have been used for a long period of time have been added to the dictionary, but then again, some other slang words have not. So, it really depends on the word.
But, for a straightforward answer i would say yes, just because some slang words are in the dictionary.
~Hope this helped
