diff --git a/tests/gui/sidebar-active.goml b/tests/gui/sidebar-active.goml
index f132bad519..eb7da32a23 100644
--- a/tests/gui/sidebar-active.goml
+++ b/tests/gui/sidebar-active.goml
@@ -2,16 +2,16 @@
 
 go-to: |DOC_PATH| + "all-summary/index.html"
 
-assert-text: ("mdbook-sidebar-scrollbox a.active", "Prefix 1")
+assert-text: (".sidebar-scrollbox a.active", "Prefix 1")
 
 go-to: |DOC_PATH| + "all-summary/part-1/chapter-1.html"
 
-assert-text: ("mdbook-sidebar-scrollbox a.active", "3. P1 C1")
+assert-text: (".sidebar-scrollbox a.active", "3. P1 C1")
 
 go-to: |DOC_PATH| + "all-summary/index.html?highlight=test"
 
-assert-text: ("mdbook-sidebar-scrollbox a.active", "Prefix 1")
+assert-text: (".sidebar-scrollbox a.active", "Prefix 1")
 
 go-to: |DOC_PATH| + "all-summary/part-1/chapter-1.html?highlight=test"
 
-assert-text: ("mdbook-sidebar-scrollbox a.active", "3. P1 C1")
+assert-text: (".sidebar-scrollbox a.active", "3. P1 C1")
diff --git a/tests/gui/sidebar-scroll.goml b/tests/gui/sidebar-scroll.goml
index 3a388e81bf..fd286e690a 100644
--- a/tests/gui/sidebar-scroll.goml
+++ b/tests/gui/sidebar-scroll.goml
@@ -3,15 +3,15 @@
 store-value: (windowHeight, 900)
 set-window-size: (1200, |windowHeight|)
 go-to: |DOC_PATH| + "sidebar-scroll/index.html"
-assert-property: ("mdbook-sidebar-scrollbox", {"scrollTop": 0})
+assert-property: (".sidebar-scrollbox", {"scrollTop": 0})
 
 click: ".chapter a[href='chapter_2.html']"
 assert-text: ("title", "Chapter 2 - sidebar-scroll")
-assert-property: ("mdbook-sidebar-scrollbox", {"scrollTop": 0})
+assert-property: (".sidebar-scrollbox", {"scrollTop": 0})
 
 click: ".chapter a[href='chapter_10.html']"
 assert-text: ("title", "Chapter 10 - sidebar-scroll")
-assert-property: ("mdbook-sidebar-scrollbox", {"scrollTop": 0})
+assert-property: (".sidebar-scrollbox", {"scrollTop": 0})
 
 // Check that heading nav of chapter 10 pushes 11 off the bottom.
 store-position: (".chapter a[href='chapter_11.html']", {"y": chapter_y})
@@ -21,16 +21,16 @@ assert: |chapter_y| > |windowHeight|
 // in position since there are only a few lines above.
 click: ".chapter a[href='chapter_11.html']"
 assert-text: ("title", "Chapter 11 - sidebar-scroll")
-assert-property: ("mdbook-sidebar-scrollbox", {"scrollTop": 0})
+assert-property: (".sidebar-scrollbox", {"scrollTop": 0})
 
 // Scroll down a little, and click on a chapter that can stay in place when
 // clicked.
-scroll-element-to: ("mdbook-sidebar-scrollbox", (0, 230))
-store-property: ("mdbook-sidebar-scrollbox", {"scrollTop": sidebarScrollTop})
+scroll-element-to: (".sidebar-scrollbox", (0, 230))
+store-property: (".sidebar-scrollbox", {"scrollTop": sidebarScrollTop})
 assert: |sidebarScrollTop| > 0
 click: ".chapter a[href='chapter_35.html']"
 assert-text: ("title", "Chapter 35 - sidebar-scroll")
-assert-property: ("mdbook-sidebar-scrollbox", {"scrollTop": |sidebarScrollTop|})
+assert-property: (".sidebar-scrollbox", {"scrollTop": |sidebarScrollTop|})
 
 // Go to the next chapter, and verify that it scrolls to the middle.
 press-key: "ArrowRight"
@@ -42,24 +42,24 @@ assert: |active_y| > 400
 assert: |active_y| < 450
 
 // Go to something near the top, it shouldn't scroll.
-store-property: ("mdbook-sidebar-scrollbox", {"scrollTop": sidebarScrollTop})
+store-property: (".sidebar-scrollbox", {"scrollTop": sidebarScrollTop})
 click: ".chapter a[href='chapter_24.html']"
 assert-text: ("title", "Chapter 24 - sidebar-scroll")
-assert-property: ("mdbook-sidebar-scrollbox", {"scrollTop": |sidebarScrollTop|})
+assert-property: (".sidebar-scrollbox", {"scrollTop": |sidebarScrollTop|})
 
 // Go to the last chapter, and verify it is scrolled to the bottom.
 go-to: |DOC_PATH| + "sidebar-scroll/chapter_100.html"
-store-property: ("mdbook-sidebar-scrollbox", {"scrollTop": scrollTop, "scrollHeight": scrollHeight, "clientHeight": clientHeight})
+store-property: (".sidebar-scrollbox", {"scrollTop": scrollTop, "scrollHeight": scrollHeight, "clientHeight": clientHeight})
 // This needs to be approximate since there is a slight difference.
 assert: |scrollTop| >= |scrollHeight| - |clientHeight| - 1
 
 // Clicking upwards shouldn't scroll.
-store-property: ("mdbook-sidebar-scrollbox", {"scrollTop": sidebarScrollTop})
+store-property: (".sidebar-scrollbox", {"scrollTop": sidebarScrollTop})
 click: ".chapter a[href='chapter_97.html']"
 assert-text: ("title", "Chapter 97 - sidebar-scroll")
-assert-property: ("mdbook-sidebar-scrollbox", {"scrollTop": |sidebarScrollTop|})
+assert-property: (".sidebar-scrollbox", {"scrollTop": |sidebarScrollTop|})
 
-store-property: ("mdbook-sidebar-scrollbox", {"scrollTop": sidebarScrollTop})
+store-property: (".sidebar-scrollbox", {"scrollTop": sidebarScrollTop})
 click: ".chapter a[href='chapter_76.html']"
 assert-text: ("title", "Chapter 76 - sidebar-scroll")
-assert-property: ("mdbook-sidebar-scrollbox", {"scrollTop": |sidebarScrollTop|})
+assert-property: (".sidebar-scrollbox", {"scrollTop": |sidebarScrollTop|})