diff --git a/assets/packages.tex b/assets/packages.tex
index 60ebfda..0f9cd1d 100644
--- a/assets/packages.tex
+++ b/assets/packages.tex
@@ -125,14 +125,14 @@
   arc=0pt,
   boxrule=0pt,
   outer arc=0pt,
-  overlay first={
-      \draw[#1] (frame.north west) -- ++ (0,-5pt);
-      \draw[#1] (frame.north west) -- ++ (25pt, 0pt);
-    },
-  overlay last={
-      \draw[#1] (frame.south west) -- ++ (0, 5pt);
-      \draw[#1] (frame.south west) -- ++ (25pt,0pt);
-    },
+  % overlay first={
+  %     \draw[#1] (frame.north west) -- ++ (0,-5pt);
+  %     \draw[#1] (frame.north west) -- ++ (25pt, 0pt);
+  %   },
+  % overlay last={
+  %     \draw[#1] (frame.south west) -- ++ (0, 5pt);
+  %     \draw[#1] (frame.south west) -- ++ (25pt,0pt);
+  %   },
   overlay  unbroken={
       \draw[#1] (frame.north west) -- ++ (0,-5pt);
       \draw[#1] (frame.north west) -- ++ (25pt, 0pt);
@@ -145,10 +145,26 @@
 \BeforeBeginEnvironment{minted}{\begin{listingbox}}
 \AfterEndEnvironment{minted}{\end{listingbox}}
 
+\newtcolorbox{linenrbox}[1][]{
+  enhanced,
+  arc=0pt,
+  boxrule=0pt,
+  outer arc=0pt,
+  overlay  unbroken={
+		\draw[#1] ([xshift=-5pt]frame.north west) -- ([xshift=30pt]frame.north west);
+		\draw[#1] ([xshift=5pt]frame.north west) -- ([xshift=5pt]frame.south west);
+		\draw[#1] ([xshift=-5pt]frame.south west) -- ([xshift=30pt]frame.south west);
+      % \draw[#1] (frame.south west) -- ++ (0, 5pt);
+      % \draw[#1] (frame.south west) -- ++ (25pt,0pt);
+    },
+  colback=white,
+  colframe=white,
+}
+
 \newcommand{\ptinline}[1]{{\texttt{\small {#1}}}}
 
 \newcommand{\highlightfile}[3][n]{
-	\ifx l#1\inputminted[autogobble=true,breaklines,breakindent=4em,frame=leftline,framesep=5pt,numbers=left,escapeinside=@@,fontsize=\scriptsize,tabsize=2]{#2}{#3}
+	\ifx l#1\begin{linenrbox}\inputminted[autogobble=true,breaklines,breakindent=4em,numbers=left,escapeinside=@@,fontsize=\scriptsize,tabsize=2]{#2}{#3}\end{linenrbox}
 	\else \begin{listingbox}\inputminted[autogobble=true,breaklines,breakindent=4em,escapeinside=@@,fontsize=\scriptsize,tabsize=2]{#2}{#3}\end{listingbox}
 	\fi
 	}