diff --git a/main.tex b/main.tex
index 8e3396e591fd45a8d58c11b3c7b2db4049edd83a..9dd2c2f2d648cfd8eda8617d5b252e298afb588a 100644
--- a/main.tex
+++ b/main.tex
@@ -4,18 +4,20 @@
 \input{newcommands.tex}
 \input{theoremstyles.tex}
 \input{newunicodes.tex}
+\definecolor{backcolour}{rgb}{0.95,0.95,0.92}
 \lstset{
-	escapeinside={<@}{@>},
+  escapeinside={<@}{@>},
   inputencoding=utf8,
   extendedchars=true,
-	frame=single,
-	basicstyle={\linespread{0.9}\scriptsize\ttfamily},
+  basicstyle={\linespread{1.1}\scriptsize\ttfamily},
+  breaklines=true,
   showstringspaces=false,
   showspaces=false,
   numbers=left,
-	numberstyle={\scriptsize\ttfamily\color{black!60}},
-  numbersep=9pt,
-	aboveskip=5mm,
+  numberstyle={\scriptsize\ttfamily\color{black!60}},
+  %numbersep=9pt,
+  backgroundcolor=\color{backcolour},
+  aboveskip=5mm,
   tabsize=2,
   breaklines=true,
   showtabs=false,
diff --git a/packages.tex b/packages.tex
index 825428376419319dbcf86e23a3615b854d926b67..2594fc0848d73e73875a8b6f9c9705c124b4e56a 100644
--- a/packages.tex
+++ b/packages.tex
@@ -3,7 +3,7 @@
 \usepackage{amsthm}
 \usepackage{graphicx}
 \usepackage{hyperref}
-\usepackage{color}
+\usepackage{xcolor}
 \usepackage{subcaption}
 \usepackage{cancel}
 \usepackage{mathtools}