plt.xlabel('Date')
plt.ylabel('US$')
plt.plot(dff.index, dff['Price'], color="red")
plt.plot(dff.index, dff['Predictions'], color="b", alpha=0.1)
plt.fill_between(dff.index, dff['Predictions']*1.03, dff['Predictions']*0.97, color='b', alpha=0.3)
plt.legend(shadow=True, fontsize='large')