diff --git a/book/website.cfg b/book/website.cfg
index b87e680..85f0dff 100644
--- a/book/website.cfg
+++ b/book/website.cfg
@@ -1,63 +1,4 @@
 \Preamble{xhtml,2,sec-filename,fn-in,fonts,svg,mathml,mathjax,nostyle}
-\DeclareGraphicsExtensions{.png,.svg,.jpg,.jpeg,.JPG,.eps,.pdf,.mps}
-% fix rendering of degree celsius
-\DeclareSIUnit\degreeCelsius{\text{°C}}
-\Configure{Gin-dim}{} 
-\Css{img { 
-    max-width: 100\%; 
-    height: auto; 
-}} 
-
-\Configure{AddCss}{style.css}
-\AddToHook{env/tikzpicture/begin}{\fontfamily{opensans-TLF}\selectfont}
-\Configure{@HEAD}{\HCode{
-<style type="text/css">
-  @import url('https://fonts.cdnfonts.com/css/open-sans');
-  body{
-    font-family: 'Open Sans';
-  }
-</style>}}
-\ConfigureEnv{titlepage}{\ifvmode\IgnorePar\fi\EndP\HCode{<main class="titlepage">}}{\ifvmode\IgnorePar\fi\EndP\HCode{</main>}}{}{}
-
-% Mini TOC
-\Configure{crosslinks+}{%
-  \bgroup
-  % container for the page toc
-  \Configure{tableofcontents}{\IgnorePar\EndP\HCode{<nav class="TOC">}\IgnorePar}
-  {\HCode{\Hnewline}}{\IgnorePar\HCode{</nav>\Hnewline}\ShowPar}{}{}%
-  \TableOfContents[chapter,section,subsection]% Print table of contents before crosslinks
-  \egroup
-  \ifvmode\IgnorePar\fi\EndP%
-  \HCode{<main class="main-content">\Hnewline<nav class="crosslinks-top">} }
-  {\HCode{</nav>\Hnewline}}
-{\ifvmode\IgnorePar\fi\EndP%
-  \HCode{<nav class="crosslinks-bottom">}}{\HCode{</nav>}}{}{}
-
-% configuration for TOC on the main page
-\Configure{tableofcontents}{\IgnorePar\EndP\HCode{<nav class="TOC">}\IgnorePar}
-{}{\IgnorePar\HCode{</nav>\Hnewline<main class="main-content">\Hnewline}\ShowPar}{}{}%
-
-% close the <main> element started in \Configure{crosslinks+}
-\Configure{@/BODY}{\ifvmode\IgnorePar\fi\EndP\HCode{</main>}}
-% Goatcounter counting
-
-\renewcommand\listofflowcharts{%
-\chapter*{\listoflocname}%
-\TableOfContents[loc]%
-}
-\ConfigureToc{loc}{\HCode{<span class="lofToc">}}{\ }{}{\HCode{</span><br />}}
-
-\ExplSyntaxOn
-\def\standaloneenv#1{}
-\pend:def\schemestart{\Picture+{}}
-\append:def\CF_schemestop{\EndPicture}
-\ExplSyntaxOff
-\makeatletter
-\def\texfourht@tikz@begin{
-  \protect\csname nested:math\endcsname% support display math
-  \Picture+[\csname a:Picture-alt\endcsname]{}%
-}
-\makeatother
 
 \begin{document}
 \EndPreamble