\documentclass[12pt, titlepage, a4paper]{article}
% \usepackage[a4paper, inner=2.5cm, outer=2.5cm, top=2.25cm, bottom=2.25cm]{geometry}
\usepackage{amsmath}
\usepackage{amsthm}
\usepackage{amssymb}
\usepackage[slovene]{babel}
\usepackage{cleveref} %zveni kul https://ctan.org/pkg/cleveref
\usepackage{theoremref} %https://ctan.org/pkg/theoremref
\usepackage{icomma} % ni presledka za vejico (To je dobro, ker v slovenščini naišemo decimalne številke z vejico)


\usepackage[most]{tcolorbox} % Za eno spacifično škatlo

% Raztegovanje teksta. Najbrž je to nepotrebno
\tolerance=9999
\emergencystretch=10pt
\hyphenpenalty=10000
\exhyphenpenalty=100


\newtheorem{theorem}{Izrek}
\newtheorem{lemma}{Lema}
\newtheorem*{remark}{Opomba}


\renewcommand\qedsymbol{$\blacksquare$} %To je za kvadratke na konc dokaza


% Kul fency prprosta škatla
\newtcolorbox{skatla}{
    colback=white,
    breakable,
    /tcb/toprule at break= 0mm,
    /tcb/bottomrule at break = 0mm
}


\begin{document}

\begin{titlepage}
    {\centering
    \includegraphics[width=9cm]{fmf-logo-home-sl.pdf} 
    
    \vspace{0.8cm}
    
    \vspace{5cm}
    \vspace{0.5cm}
    {\Huge\textbf{Naslov}} \\
    \vspace{0.5cm}
    Predmet al neki idk\\
    \vspace{0.5cm}
    \large{Fakulteta za matematiko in fiziko, \\
    Oddelek za matematiko}
    
    \vfill

    \textbf{ime in priimek} \\
    
    \vspace{1cm}
    
    \begin{center}
        {Ljubljana, \\
        datum}
    \end{center}
    }
    \vspace{3cm}
\end{titlepage}

\pagenumbering{arabic}

\end{document}