Move font-family to config

pygal/css/base.css

@@ -23,32 +23,32 @@
  */
 
 {{ id }}.title {
-  font-family: monospace;
+  font-family: {{ style.font_family }};
   font-size: {{ font_sizes.title }};
 }
 
 {{ id }}.legends .legend text {
-  font-family: monospace;
+  font-family: {{ style.font_family }};
   font-size: {{ font_sizes.legend }};
 }
 
 {{ id }}.axis text {
-  font-family: monospace;
+  font-family: {{ style.font_family }};
   font-size: {{ font_sizes.label }};
 }
 
 {{ id }}.axis text.major {
-  font-family: monospace;
+  font-family: {{ style.font_family }};
   font-size: {{ font_sizes.major_label }};
 }
 
 {{ id }}.series text {
-  font-family: monospace;
+  font-family: {{ style.font_family }};
   font-size: {{ font_sizes.value }};
 }
 
 {{ id }}.tooltip text {
-  font-family: monospace;
+  font-family: {{ style.font_family }};
   font-size: {{ font_sizes.tooltip }};
 }
 

pygal/style.py

@@ -35,6 +35,7 @@ class Style(object):
             foreground='#999',
             foreground_light='#eee',
             foreground_dark='#555',
+            font_family='monospace',
             opacity='.8',
             opacity_hover='.9',
             transition='250ms',