diff --git a/eratosthenes-en.tex b/eratosthenes-en.tex
index 42401f2..b1b60e5 100644
--- a/eratosthenes-en.tex
+++ b/eratosthenes-en.tex
@@ -25,7 +25,7 @@
 \title{Eratosthenes method}
 \begin{document}
 	\tikzset{partial ellipse/.style args = {#1:#2:#3}{insert path={+ (#1:#3) arc (#1:#2:#3)}}}
-	\begin{tikzpicture}%[y=.2cm, x=.7cm,font=\sffamily]%[background rectangle/.style={fill=space},show background rectangle]
+	\begin{tikzpicture}
 		\begin{scope}
 			%earth's surface
 			\draw [fill=earth] (-11,1) arc(90:0:18) -- (-11,-17) -- (-11,1);
@@ -37,7 +37,7 @@
 			%wall
 			\draw[rotate around={-38:(0.18,-2.9)},ultra thick,fill=white, opacity=0.5] (0.18,-2.9) -- (0.7,-2.9) -- (0.7,-4.4) -- (0.18,-4.4) -- (0.18,-2.9);
 			%arrows
-			\begin{scope}%[>=latex]
+			\begin{scope}
 				%label vertical alexandria
 				\draw [decorate,decoration={text along path, raise=6pt, text align=center, text={|\fontsize{24}{25}\selectfont\color{red}|Vertical at Alexandria}}] (-1.88,-1.48) -- (4.8,9.9);
 				%label parallels