diff --git a/doc/conf.py b/doc/conf.py
index 29b043ac..5d3e87d7 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -90,12 +90,12 @@ html_favicon = '../resources/icon.ico'
 html_logo = '../resources/icon-128x128.png'
 
 html_css_files = [
-    'center-rtd.css',
+    'lg-custom.css',
 ]
 
 # 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 = [
-    'css/center-rtd.css',
+    'css/',
 ]
diff --git a/doc/css/center-rtd.css b/doc/css/center-rtd.css
deleted file mode 100644
index 9b07fa88..00000000
--- a/doc/css/center-rtd.css
+++ /dev/null
@@ -1,17 +0,0 @@
-@media screen and (min-width:1100px) {
-  .wy-nav-content-wrap {
-  margin-left: auto;
- }
- .wy-nav-content {
-  margin: auto;
- }
-}
-
-@media screen and (min-width:769px) and (max-width:1420px) {
- .wy-nav-content-wrap {
-  margin-left: 300px;
- }
- .wy-nav-content {
-  margin: 0;
- }
-}
diff --git a/doc/css/lg-custom.css b/doc/css/lg-custom.css
new file mode 100644
index 00000000..9f03ac49
--- /dev/null
+++ b/doc/css/lg-custom.css
@@ -0,0 +1,34 @@
+/* Center content in the RTD theme */
+@media screen and (min-width: 1100px) {
+  .wy-nav-content-wrap {
+    margin-left: auto;
+  }
+
+  .wy-nav-content {
+    margin: auto;
+  }
+}
+
+@media screen and (min-width:769px) and (max-width:1420px) {
+  .wy-nav-content-wrap {
+    margin-left: 300px;
+  }
+
+  .wy-nav-content {
+    margin: 0;
+  }
+}
+
+/* Make <kbd> look like a key */
+kbd {
+  background-color: #eee;
+  border-radius: 3px;
+  border: 1px solid #b4b4b4;
+  box-shadow: 0 1px 1px rgba(0, 0, 0, .2), 0 2px 0 0 rgba(255, 255, 255, .7) inset;
+  color: #333;
+  display: inline-block;
+  font-size: .85em;
+  line-height: 1;
+  padding: 2px 4px;
+  white-space: nowrap;
+}