Board Thread:Wiki discussions and announcements/@comment-171752-20150806155555/@comment-171752-20150811220240

Can the maximum width on desktops be adjusted in the CSS?

Yes. CSS can be applied to any of the infobox's default classes, and it will only affect the desktop skin, as the mobile skin does not load CSS from Wikia.css or Common.css.

To adjust the  of the infobox, use this:

.portable-infobox { max-width: ___px; }

Also, as mentioned on the help page, you can apply styles to a specific infobox (and its child classes) by giving it a custom name using. So if you wanted to use a custom infobox theme called "ability", you could use...

...and apply styles (for example, max-width) just to that infobox using this: .portable-infobox-theme-ability { max-width: ___px; }