diff --git a/web_src/css/base.css b/web_src/css/base.css
index 94dd85814e..f2b4d3d98c 100644
--- a/web_src/css/base.css
+++ b/web_src/css/base.css
@@ -1204,6 +1204,7 @@ img.ui.avatar,
   box-shadow: none;
 }
 
+/* replace fomantic popover box shadows */
 .ui.dropdown .menu,
 .ui.upward.dropdown > .menu,
 .ui.menu .dropdown.item .menu,
@@ -1213,6 +1214,9 @@ img.ui.avatar,
 .ui.upward.active.selection.dropdown:hover .menu {
   box-shadow: 0 6px 18px var(--color-shadow);
 }
+.ui.floating.dropdown .menu {
+  box-shadow: 0 6px 18px var(--color-shadow) !important;
+}
 
 .ui.dimmer {
   background: var(--color-overlay-backdrop);
diff --git a/web_src/css/themes/theme-arc-green.css b/web_src/css/themes/theme-arc-green.css
index 088e92d12c..ce0989a5f6 100644
--- a/web_src/css/themes/theme-arc-green.css
+++ b/web_src/css/themes/theme-arc-green.css
@@ -211,7 +211,7 @@
   --color-button: #1e252e;
   --color-code-bg: #222733;
   --color-code-sidebar-bg: #232834;
-  --color-shadow: #00000060;
+  --color-shadow: #00000058;
   --color-secondary-bg: #2a2e3a;
   --color-text-focus: #fff;
   --color-expand-button: #3c404d;