fix color for collapsed media breakpoint

docs/css/theme_extra.css

@@ -5,10 +5,17 @@
 
     the color scheme is subject to future redesign.
 */
+
 a {
     color: #3b6018 !important;
 }
 
+pre, .rst-content tt {
+    background: none;
+    border: solid 1px #e1e4e5;
+    color: #333;
+}
+
 .btn-neutral {
     background-color: #9da396 !important;
     color: #d8e1cf !important;
@@ -21,6 +28,14 @@ a {
     border-color: #555555 !important;
 }
 
+.wy-nav-top {
+    background-color: #2b4016 !important;
+}
+
+.wy-nav-top > a {
+    color: #cdd0cb !important;
+}
+
 .wy-nav-content-wrap {
     background-color: #111111 !important;
 }
@@ -39,9 +54,7 @@ a {
 }
 
 .wy-nav-content {
-    /* background: #222222 !important; */
     background: #1b1c19 !important;
-    /* color: #777777 !important; */
     color: #a7aca3 !important;
 }