--- a/style.sty	Thu May 25 21:22:23 2023 +0100
+++ b/style.sty	Tue May 30 13:27:54 2023 +0100
@@ -45,6 +45,22 @@
 \def\fnote{\gdef\@thefnmark{}\@footnotetext}
 \makeatother
 
+%% a line after figures
+\usepackage{caption}
+\DeclareCaptionFormat{custom}
+{%
+  \textbf{#1#2}#3
+  \raisebox{0.5em}{\rule{\textwidth}{0.1mm}}
+}
+\captionsetup{format=custom}
+
+%\usepackage{float}
+%\newcommand{\topfigrule}{\vspace*{1pt}\noindent\rule{\columnwidth}{0.4pt}\vspace{2.6pt}}
+%\newcommand{\dblfigrule}{\vspace*{1pt}\noindent\rule{\columnwidth}{0.4pt}\vspace{2.6pt}}
+%\newcommand{\botfigrule}{\vspace*{1pt}\noindent\rule{\columnwidth}{0.4pt}\vspace{2.6pt}}
+
+
+
 \newcommand{\HEADER}{{\bf Please submit your solutions via email. Please submit 
 only PDFs! Every solution should be preceeded by the corresponding 
 question text, like: