I am building a backend for a diving website and I need it to be redesigned. I have quickly coded a demo page with all the needed elements (buttons, dropbox, popup, calendar, ect.) but I need it to be more professional looking. I want it to be easy to use, so please dont make it complex. Please have a look at the demo page here: http://facebookthemes.com/admin_demo.html
I have also attached a image of how the style of the website will be, so make it the same feel as that.
Please use the same page setup as the demo page (menu on left, header on top with logo and name of center, info on right in header, ect.)