fixed some problems

This version introduces multiple enhancements:

fixed problem with validation form
fixed style syntax error

Details of additions/deletions below:
--------------------------------------------------------------

Modified:   /js/scripts.js
            -- Updated --
                fixed problem when user don't fill user form, and script allow go to next step

Modified:   /css/main.css
            -- Updated --
                fixed syntax error for error block margin
Merge pull request #15 from chajr/errors

fixed some problems