How to customize theme styles is one of the most asked questions by the PrimeFaces users. There are simple rules to be followed to overwrite bundled theme styles with custom CSS. There is no need to edit bundled themes and repackage theme JAR files.
In this recipe, we will present two examples for theme customization—one for
SelectOneMenu and another for the
Tree component. We will see how to change styles for a particular component or for all components of the same type. Furthermore, we will learn tips for where to place custom CSS in order to overwrite the PrimeFaces styles.
Let's set a fixed width for
p:selectOneMenu and remove the background and border for
p:tree. The default width of