# Different running footer on first chapter page

I have been stuck with this issue for a long time. The first page of a new chapter had a slightly larger font size page number.

Q: Why the first page of a new chapter is using a different running footer?

A: From one of Guido Sette TeX files:

Some LATEX commands, like `\chapter`, use the `\thispagestyle` command to automatically switch to the plain page style, thus ignoring the page style currently in effect.

To customise even such pages you must redefine the `plain` pagestyle.

You could do this by defining the `\ps@plain` command, but `fancyhdr` gives you an easier way with the `\fancypagestyle` command.

This command can be used to redefine existing pagestyles (like plain) or to define new ones, e.g. if part of your document is to use a different pagestyle.

This command has two parameters: one is the name of the pagestyle to be defined, the second consists of commands that change the headers and/or footers, i.e. fancyhead etc.

Changes to `headrulewidth` and `footrulewidth` are also allowed.