diff --git a/doc/source/_static/custom.css b/doc/source/_static/custom.css
new file mode 100644
index 00000000..2ad3413b
--- /dev/null
+++ b/doc/source/_static/custom.css
@@ -0,0 +1,14 @@
+/* Customizations to the theme */
+
+/* override table width restrictions */
+/* https://github.com/readthedocs/sphinx_rtd_theme/issues/117 */
+@media screen and (min-width: 768px) {
+    .wy-table-responsive table td, .wy-table-responsive table th {
+        white-space: normal !important;
+    }
+
+    .wy-table-responsive {
+        overflow: visible !important;
+        max-width: 100%;
+    }
+}
diff --git a/doc/source/conf.py b/doc/source/conf.py
index a6e2cf8c..04a95afd 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -131,7 +131,11 @@ html_theme = 'sphinx_rtd_theme'
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-#html_static_path = ['_static']
+html_static_path = ['_static']
+
+# add the theme customizations
+def setup(app):
+    app.add_stylesheet("custom.css")
 
 # If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
 # using the given strftime format.