[MD History] Move background-clip div behind items.

chrome/browser/resources/md_history/app.vulcanized.html

Index: chrome/browser/resources/md_history/app.vulcanized.html
diff --git a/chrome/browser/resources/md_history/app.vulcanized.html b/chrome/browser/resources/md_history/app.vulcanized.html
index 2e52b2471c81cb51762287ca1abdb1196e77394a..d6ae3e44935c533489cd0eb5db5dddc799eee23b 100644
--- a/chrome/browser/resources/md_history/app.vulcanized.html
+++ b/chrome/browser/resources/md_history/app.vulcanized.html
@@ -3917,6 +3917,7 @@ paper-checkbox {
         position: absolute;
         right: 0;
         top: 0;
+        z-index: -1;
 }
 
 :host([is-card-end]) #background-clip {
@@ -3932,7 +3933,6 @@ paper-checkbox {
         position: absolute;
         right: 0;
         top: 0;
-        z-index: -1;
 }
 
 :host([embedded]) #background {