\usepackage{titling}

\pretitle{
  \begin{flushleft}
  \LARGE
}
\posttitle{
  \par
  \end{flushleft}
}

\preauthor{
  \begin{flushleft}
  \large 
}
\postauthor{
  \par
  \end{flushleft}
}

\predate{
  \begin{flushleft}
  \large
}
\postdate{
  \par
  \end{flushleft}
}

%---------------------------------------%

\newtcolorbox{headerbox}{
  % tikznode,
  % tcbox width=auto limited,
  % capture=hbox,
  enhanced,
  colback=ntnublue,
  coltext=white,
  arc=0pt,
  boxrule=0pt,
  parbox=false,
  top=5mm,
  bottom=5mm
}

\newcommand{\tittel}{
  \begin{minipage}{0.80\textwidth}
    \begin{headerbox}
      \Huge\thetitle

      \LARGE\theauthor
    \end{headerbox}
  \end{minipage}
  \hfill
  \begin{minipage}{0.10\textwidth}
    \vspace*{2mm}
    \centering
    \includegraphics[scale=1.2]{../lib/ntnu_alt_versjon_uten_slagord.pdf}
  \end{minipage}
  \vspace*{2cm}
}