full width/ centre the contact form

I have hidden the map and address section and have plenty of blank space in contact section now. How do I either centre align the contact form or make it full width to get rid of blank space?
URL:http://webworxworld.com

 

Hi,

Kindly check we have fix your contact form issue.

 

Can we please move the name and email fields in same line, make the form full width of website, centre the submit button. please and thanks!

 

Hi,

Done. Kindly check

 

Only the button got centre. Can we please move the name and email fields in same line/row, something link this screenshot below:

 

Hi,

Done, kindly check