The style works more or less the same way in both Chrome and Firefox.

• The 'Save' button is moved to the left edge of the header.
  
• The style name becomes the title in the header.
  
• The 'house rules' are moved to the left column, under the menu.
  
• Description and Additional Info (which should be renamed 'Notes') are resized to resemble the style page
  
• Edit boxes are fixed width, and resizeable vertically but not horizontally.
  
• License options are collapsed and only the active license is shown, except when hovering over a license.

Screenshots

• Primary Screenshot assumes the position it has in the style pages.
  
• Automatically generated, user-supplied, and 'no screenshots' are overlaid in a single control. The radio buttons choose which is visible.
  
• Additional Screenshots are presented like the Primary Screenshot instead of as table rows.
  
• All screenshots are resized and cropped to 350 x 265px as in the style pages.
  
• All are given a patterned background.

Style Settings

• Up/down/remove buttons are only shown when hovering over a style setting or option, and only for that setting or option.
  
• Disabled up/down/remove buttons are grayed out and unresponsive instead of hidden completely.
  
• When hovering over the up/down/remove buttons, the corresponding setting or option is outlined.
  
• 'Default' radio buttons are moved to the left edge of drop-down and image settings.
  
• Install keys are aligned in a column and displayed in fixed font to emphasize their role.
  
• Option install keys are aggressively grayed out, as they have no use on the edit page.
  
• Default values for color settings and text settings are moved below the setting label and keyword, and the line with the label and keyword is given a gray background, as in drop-down and image settings.
  
• Install key and image URL inputs are frameless when not focused.
  

It doesn't however work on the 'upload error' page yet. Fixed 12/24 - ho ho ho!

There are examples of clip-path in Chrome and Firefox, of using @supports to choose browser-specific hacks, and of course some browser-specific hacks.