From a053229f0f4fadccf84ebd0d91221117ea46ca0a Mon Sep 17 00:00:00 2001
From: Damyon Wiese <damyon@moodle.com>
Date: Wed, 2 Nov 2016 15:48:49 +0800
Subject: [PATCH] MDL-56690 theme_boost: Allow menus to scroll in the header

The header is fixed - so if menus in the header are longer than the page, you can't scroll
to the bottom of the menu. This sets max height on the menus to the viewport height - the navbar height and sets them to scroll
auto.
---
 theme/boost/scss/moodle/undo.scss | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/theme/boost/scss/moodle/undo.scss b/theme/boost/scss/moodle/undo.scss
index 1d490ad041c..9556e7be3dc 100644
--- a/theme/boost/scss/moodle/undo.scss
+++ b/theme/boost/scss/moodle/undo.scss
@@ -163,3 +163,9 @@ body:not(.jsenabled) .langmenu:hover > .dropdown-menu,
 ol {
     margin: 0 0 $line-height-base / 2 2.5em;
 }
+
+// Set menus in the fixed header to scroll vertically when they are longer than the page.
+.navbar-static-top .dropdown .dropdown-menu {
+    max-height: calc(100vh - #{$navbar-height});
+    overflow-y: auto;
+}