diff --git a/docs/css/extra.css b/docs/css/extra.css
new file mode 100644
index 0000000..023bc68
--- /dev/null
+++ b/docs/css/extra.css
@@ -0,0 +1,18 @@
+/*
+ * from https://github.com/readthedocs/sphinx_rtd_theme/issues/117#issuecomment-153083280
+ */
+
+/* override table width restrictions */
+@media screen and (min-width: 767px) {
+
+  .wy-table-responsive table td {
+    /* !important prevents the common CSS stylesheets from
+       overriding this as on RTD they are loaded after this stylesheet */
+    white-space: normal !important;
+  }
+
+  .wy-table-responsive {
+    overflow: visible !important;
+  }
+
+}
diff --git a/mkdocs.yml b/mkdocs.yml
index 0850f71..b05fb4e 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -24,4 +24,6 @@ markdown_extensions:
   - fenced_code
   - toc:
       permalink: True
+extra_css:
+    - css/extra.css