With these options you can control the options for users customizing their profile page style.
Settings > Options > User Profile: Style Customization Options
Allowed Fonts
The list of allowed fonts for profile style customizations. Each font must be on its own line.
Allowed Font Sizes
The list of allowed fonts size for profile style customizations. Put each font size on its own line. You may use any size that is valid in CSS.
Allowed Border Widths
The list of allowed border width sizes for profile style customizations. Put each border width size on its own line.
Allowed Padding
The list of allowed padding sizes for profile style customizations. Put each padding size on its own line.