diff --git a/doc/_static/mpl.css b/doc/_static/mpl.css
index e460fd569823..55c6695ae30d 100644
--- a/doc/_static/mpl.css
+++ b/doc/_static/mpl.css
@@ -971,6 +971,24 @@ p.sphx-glr-signature a.reference.external {
     font-weight: 400;
 }
 
+.viewcode-link {
+    float: right;
+}
+
+.viewcode-back {
+    float: right;
+    font-family: "Helvetica Neue", Helvetica, 'Lucida Grande', 'Lucida Sans Unicode', 'Geneva', 'Verdana', sans-serif;
+}
+
+div.viewcode-block:target {
+    margin: -1px -13px;
+    padding: 0 10px;
+    border-top: 1px solid #ccc;
+    border-bottom: 1px solid #ccc;
+    background-color: #f4debf;
+
+}
+
 .sidebar-announcement {
     border: 1px solid #11557C;
     background: #eff9ff;
diff --git a/doc/conf.py b/doc/conf.py
index 24b4579d7c24..af152601b368 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -33,6 +33,7 @@
     'sphinx.ext.doctest',
     'sphinx.ext.inheritance_diagram',
     'sphinx.ext.intersphinx',
+    'sphinx.ext.viewcode',
     'IPython.sphinxext.ipython_console_highlighting',
     'IPython.sphinxext.ipython_directive',
     'numpydoc',  # Needs to be loaded *after* autodoc.