It's "you are welcome." It could also be written "you're welcome" which often sounds as though they are saying "your."
"You're" is short for "You Are" ... so "you're welcome" is quite correct "Your" is possessive term ... "it is your bike" ... not "your welcome" .
you're welcome.
you are welcome [your'e welcome ]
to answer your question its meet the browns not welcome to the browns.
It is a polite response.
How to Make Welcome Mats
How to Make Guests Feel Welcome
Comic - Con 2010: Dead Rising 2 Welcome To Fortune City Trailer
English in 30 Seconds: Not at all