Change header and search section design (clone of name.com & enom.com)

My current site: [login to view URL] (WHMCS theme installed) Domain hosting business. - - - - - -- - - - - - -- - - - - - - -- - - - - - - - - - - Need to change it’s header section (as like as [login to view URL]) and domain search box section (as like as [login to view URL]) - - - - - -- - - - - - -- - - - - - - -- - - - - - - - - - - N.B: All options must be work fine and swiftly. Must be responsive design - - - - - -- - - - - - -- - - - - - - -- - - - - - - - - - - - - - - - -- - - - - - -- - - - - - - -- - - - - - - - - - - Work Details: Go to [login to view URL] 1. Cart: (cart is Most important - when a client click order. It must be show value (1), my existing site's cart already working, no problem here, must be use my existing cart script, otherwise it will not work properly ) 2. Login : (same as like as name.com. You can see my existing website top menu on login system are 90% same to [login to view URL] login system design ) 3. sign up: (signup option will be linked in my exixting register option.) 4. Main menu: ( main menu and dropdown menu will be same as like as [login to view URL], you just use (#) in link options, i will linked my main menu option later) 5. search box section: (copy the design from [login to view URL] search box section, but use my search box script, otherwise it will not work properly ) 6. Login and register option hide: (After client login- my header login and signup option will be hide) So first more and more review my existing header, searchbox, login, cart script because when you update your design it may not work properly. If you need to know anything contact me any time.