diff --git a/tornado/tornado.py b/tornado/tornado.py
index 927ce63..7e56b73 100644
--- a/tornado/tornado.py
+++ b/tornado/tornado.py
@@ -47,8 +47,14 @@ df = df.interpolate(method='spline', order=5)
 # df['death_change'] = df['daily_deaths_avg'].diff()
 
 # %%
-ax = plt.figure(figsize=cm2inch(15,15), frameon=False)
-plt.plot(df['death_change'], df['daily_deaths_avg'])
+fig, ax = plt.subplots(figsize=cm2inch(15,15))
+
+ax.plot(df['death_change'], df['daily_deaths_avg'], lw=1)
+#plt.plot(df['death_change'], df['daily_deaths_avg'], 'ob') # dots for debugging
+
+ax.axvline(x=0, c='black', lw=1, ls=':')
+ax.spines['top'].set_visible(False)
+ax.spines['right'].set_visible(False)
 plt.show()
 
 #%%