diff --git a/src/librustdoc/html/static/css/rustdoc.css b/src/librustdoc/html/static/css/rustdoc.css
index e9e43209b5580..d7e786ebab7e2 100644
--- a/src/librustdoc/html/static/css/rustdoc.css
+++ b/src/librustdoc/html/static/css/rustdoc.css
@@ -14,6 +14,7 @@
and on the RUSTDOC_MOBILE_BREAKPOINT */
--desktop-sidebar-width: 200px;
--src-sidebar-width: 300px;
+ --desktop-sidebar-z-index: 100;
}
/* See FiraSans-LICENSE.txt for the Fira Sans license. */
@@ -386,7 +387,7 @@ img {
height: 100vh;
top: 0;
left: 0;
- z-index: 100;
+ z-index: var(--desktop-sidebar-z-index);
}
.rustdoc.src .sidebar {
@@ -407,7 +408,7 @@ img {
touch-action: none;
width: 9px;
cursor: col-resize;
- z-index: 200;
+ z-index: calc(var(--desktop-sidebar-z-index) + 1);
position: fixed;
height: 100%;
/* make sure there's a 1px gap between the scrollbar and resize handle */
@@ -1045,7 +1046,7 @@ so that we can apply CSS-filters to change the arrow color in themes */
position: absolute;
top: 100%;
right: 0;
- z-index: 101;
+ z-index: calc(var(--desktop-sidebar-z-index) + 1);
margin-top: 7px;
border-radius: 3px;
border: 1px solid var(--border-color);
@@ -1556,7 +1557,7 @@ a.tooltip:hover::after {
height: 34px;
width: 34px;
background-color: var(--main-background-color);
- z-index: 101;
+ z-index: calc(var(--desktop-sidebar-z-index) + 1);
}
.hide-sidebar .src #sidebar-button {
position: static;