diff --git a/compendium.pdf b/compendium.pdf
index 4f80b26..ffdda5a 100644
Binary files a/compendium.pdf and b/compendium.pdf differ
diff --git a/compendium.tex b/compendium.tex
index b69878b..92fa2c8 100644
--- a/compendium.tex
+++ b/compendium.tex
@@ -8,19 +8,19 @@
 \definecolor{explainboxbg}{RGB}{170, 255,125}
 \usepackage[framemethod=default]{mdframed}
 \mdfsetup{skipabove = \topskip, skipbelow = \topskip}
-
 % modified after:
 % https://ctan.ebinger.cc/tex-archive/macros/latex/contrib/mdframed/mdframed-example-default.pdf
-\newenvironment{explainbox}[1][]{%
+\newenvironment{explainbox}[2][\textwidth]{%
 	\mdfsetup{
 		frametitle={%
 			\tikz[baseline = (current bounding box.east), outer sep = 0pt]
 			\node[anchor=east, rectangle, fill = explainboxframe!90]
-			{\strut #1};},
+			{\strut #2};},
+		frametitlefont = \sffamily,
 		innertopmargin = 10pt, linecolor = explainboxframe!90,%
 		linewidth = 2pt, topline = true,
 		frametitleaboveskip = \dimexpr-\ht\strutbox}
-	\begin{mdframed}[]\relax%
+	\begin{mdframed}[userdefinedwidth = #1]\relax%
 	}{
 	\end{mdframed}
 }
@@ -44,11 +44,6 @@
 %\pagenumbering{none}
 \section*{Einleitung}
 
-dassda
-\begin{explainbox}[]
-	bliblablub
-\end{explainbox}
-
 
 % ### TOC ###
 \newpage