Auto merge of #32022 - gohyda:master, r=alexcrichton

- Empty `.sidebar .location` caused "grey line" on top of the documentation page (under 700px) fixed.
- `.sidebar .location` appearance improvement in responsive mode.

Author: bors

src/librustdoc/html/static/rustdoc.css

@@ -616,15 +616,19 @@ a.test-arrow {
     }
 
     .sidebar .location {
-        float: left;
+        float: right;
         margin: 0px;
-        padding: 5px;
-        width: 60%;
+        padding: 3px 10px 1px 10px;
+        min-height: 39px;
         background: inherit;
         text-align: left;
         font-size: 24px;
     }
 
+    .sidebar .location:empty {
+        padding: 0;
+    }
+
     .sidebar img {
         width: 35px;
         margin-top: 5px;