vBulletin Manual - Creating Child Styles

Path to creating a child style: Styles & Templates > Style Manager, click the StyleVars dropdown, and select the Add Child Style option (under Edit Style Options).

The Add New Style page of the Style Manager opens.

Notice that the correct parent style is already selected in the form.

Fill out the form as described in Creating New Styles.

Note:

You must click Save for changes to take effect.

You can create additional child styles of your new child style to satisfy more complex inheritance criteria.

For more information about style inheritance, see the Style Inheritance article.