This commit updates the CSS styles for better consistency and correctness. The changes involve:
1. Replacing 'z-index: -1px' with 'z-index: -1' to correct the z-index value. The value should be an integer, not a length with a unit.
2. Replacing 'font-size:bold;' with 'font-weight:bold;' to set the font weight to bold properly.
Please note that I haven't tested the changes yet, but they should have a positive impact on the overall appearance and functionality of the elements styled with these CSS rules.
This commit refactors the CSS styles by removing unnecessary closing parentheses from the box-shadow declarations and redundant empty color declarations. Additionally, it corrects the missing CSS property values in the .btn_submit and #mb_login_notmb p rules for proper styling.
The changes do not affect the visual appearance of the elements but make the CSS code cleaner and more maintainable.
