%% switch to normal page headings with page numbering
\newcommand{\fancynormal}{
  \renewcommand{\headrulewidth}{0.5pt}
  \renewcommand{\footrulewidth}{0mm}
  %%\fancyhead[LE]{\bfseries\nouppercase\leftmark~\hrulefill}
  %%\fancyhead[RO]{\hrulefill~\bfseries\nouppercase\rightmark}
  \fancyhead[LE]{\sffamily\bfseries\nouppercase\leftmark}
  \fancyhead[RO]{\sffamily\bfseries\nouppercase\rightmark}
  \fancyfoot[LE,RO]{\bfseries\thepage}
  \fancypagestyle{plain}{
    %% header of first page in chapter
    \fancyhead[LE,RO]{}
    \fancyfoot[LE,RO]{\bfseries\thepage}
    \renewcommand{\headrulewidth}{0mm}
    \renewcommand{\footrulewidth}{0mm}
  }
}