update doc style

docs/_static/custom.css

@@ -2,4 +2,5 @@
     display:block;
     margin-left:auto;
     margin-right:auto;
+    margin-bottom:60px;
 }

docs/examples/block_color_and_background_color.md

@@ -15,7 +15,9 @@ fig.set_facecolor('#EEEEEE')
 
 <img class="img_middle" alt="Block Color and Background Color" src="https://raw.githubusercontent.com/gyli/PyWaffle/master/examples/docs/block_color_and_background_color.svg?sanitize=true">
 
-[Colormap](https://matplotlib.org/gallery/color/colormap_reference.html) could also be applied to waffle chart, which sets colors automatically. Sequential colormaps do not work with PyWaffle and only Qualitative colormaps are supported, including `Pastel1`, `Pastel2`, `Paired`, `Accent`, `Dark2`, `Set1`, `Set2`, `Set3`, `tab10`, `tab20`, `tab20b`, `tab20c`.
+[Colormap](https://matplotlib.org/gallery/color/colormap_reference.html) could also be applied to waffle chart through parameter `cmap_name`, which sets colors automatically. 
+
+> **_NOTE:_** Sequential colormaps do not work with PyWaffle and only Qualitative colormaps are supported, including `Pastel1`, `Pastel2`, `Paired`, `Accent`, `Dark2`, `Set1`, `Set2`, `Set3`, `tab10`, `tab20`, `tab20b`, `tab20c`.
 
 ```python
 fig = plt.figure(

docs/examples/title_label_ledend.md

@@ -6,6 +6,8 @@ Parameter `labels` accepts labels in a list. If it is not specified, key of `val
 
 Parameter `legend` accepts parameters of [matplotlib.pyplot.legend](https://matplotlib.org/api/_as_gen/matplotlib.pyplot.legend.html) in a dict.
 
+> **_NOTE:_** Labels could also be specified in parameter `legend` under key `labels` instead.
+
 ```python
 data = {'Cat1': 48, 'Cat2': 46, 'Cat3': 3}
 fig = plt.figure(
@@ -31,5 +33,3 @@ fig = plt.figure(
 ```
 
 <img class="img_middle" alt="Title, Label and Legend" src="https://raw.githubusercontent.com/gyli/PyWaffle/master/examples/docs/title_label_ledend.svg?sanitize=true">
-
-> **_NOTE:_** Labels could also be specified in parameter `legend` as an item instead.