Issue specified full font family specs
@@ -156,7 +156,7 @@ html_sidebars = {
# further. For a list of options available for each theme, see the
# documentation.
#
-font_family = ['Helvetica']
+font_family = ['Helvetica Neue', 'Helvetica', 'Arial', 'sans-serif']
nn_black = '#0A0A0A'
nn_red = '#CC0000'
nn_gray = '#DDDDDD'
