\documentclass{layout/siccs-thesis}
%% for equations a nice parameter description
\newenvironment{conditions}
{\par\vspace{\abovedisplayskip}\noindent\begin{tabular}{>{$}l<{$} @{${}={}$} l}}
{\end{tabular}\par\vspace{\belowdisplayskip}}
%% spacing before and after equations to the text
\setlength{\abovedisplayskip}{8pt}
\setlength{\belowdisplayskip}{8pt}
%% top margin headheght
\setlength{\headheight}{13.59999pt}
%% Set up the bibliography
% styles https://de.overleaf.com/learn/latex/Biblatex_citation_styles
% here is the used bibliography package
\usepackage[style=authoryear,sorting=nyt,maxcitenames=3]{biblatex}
\addbibresource{references.bib}
% for spacing between references in the bibliography
\setlength\bibitemsep{1.5\itemsep}
% for the commas between author and year
\DeclareDelimFormat{nameyeardelim}{\addcomma\space}
%% Additional packages and commands
%settings for the SI units
\sisetup{locale = DE,
output-decimal-marker={.}, % because in german is switched to {,}
separate-uncertainty=true,
multi-part-units=single,
range-units = single ,
list-units = single,
per-mode=reciprocal,
group-minimum-digits = 4,
number-unit-product = \hspace{0.16667em plus 0.08334em}}
%% here individual units are defined
\DeclareSIUnit\equivalents{eq}
\DeclareSIUnit\water{kgw}
\DeclareSIUnit\year{yr}
\DeclareSIUnit\dollar{\$}
\setlist{itemsep=-2pt} % Reducing white space in lists slightly
\renewcommand{\deg}{\si{\degree}\xspace} % Use \deg easily, everywhere
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%% Begin of document %%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
%% Roman page numbering
\frontmatter
%% Defining the main parameters
\title{Title of the thesis}
\subtitle{Master Thesis}
\author{Your Name}
%\subject{AB1234: Optional Course Name}
\affiliation{University of Hamburg}
\definecolor{title}{HTML}{4884d6} % Color for title
% title page
\include{frontmatter/_titlepage}
% abstract
\input{frontmatter/summary}
\tableofcontents
%\listoffigures
%\listoftables
\input{frontmatter/nomenclature}
%% Arabic page numbering
\mainmatter
\input{content/introduction}
\input{content/theory}
%\input{content/chapter-2}
%\input{content/chapter-3}
\input{content/methods}
%\input{mainmatter/chapter-4} % Create file to add
\input{content/results}
\input{content/discussion}
\input{content/conclusion}
\newpage
\setcounter{secnumdepth}{-1}
\input{content/acknowledgement}
%% Prevent urls running into margins in bibliography
\setcounter{biburlnumpenalty}{7000}
\setcounter{biburllcpenalty}{7000}
\setcounter{biburlucpenalty}{7000}
%% Add the bibliography
\printbibliography[heading=bibintoc,title=References]
% Letters for chapters
\appendix
\newpage
\setcounter{secnumdepth}{-1}
\input{appendix/versicherung.tex}
%\input{appendix/appendix-a}
\end{document}