fixing whitespaces and box computations

pygal/graph/base.py

@@ -117,7 +117,6 @@ class BaseGraph(object):
             else:
                 self.margin.left += w + self.legend_box_size
 
-
         if self.title:
             h, _ = get_text_box(self.title[0], self.title_font_size)
             self.margin.top += len(self.title) * (10 + h)
@@ -138,8 +137,7 @@ class BaseGraph(object):
             h, w = get_texts_box(
                 cut(self._y_labels), self.label_font_size)
             self.margin.left += 10 + max(
-                w * cos(rad(self.y_label_rotation)), w)
-
+                w * cos(rad(self.y_label_rotation)), h)
 
     @cached_property
     def _legends(self):