Merge pull request #6421 from Snuffleupagus/outline-CSS-tweaks

Adjust the `min-width` of outline items and use more consistent `border-radius` (PR 6242 follow-up)

web/viewer.css

@@ -1206,6 +1206,8 @@ html[dir='rtl'] .outlineItem > .outlineItems {
   text-decoration: none;
   display: inline-block;
   min-width: 95%;
+  min-width: calc(100% - 4px); /* Subtract the right padding (left, in RTL mode)
+                                  of the container. */
   height: auto;
   margin-bottom: 1px;
   border-radius: 2px;
@@ -1280,6 +1282,7 @@ html[dir='rtl'] .outlineItemToggler::before {
   box-shadow: 0 1px 0 hsla(0,0%,100%,.05) inset,
               0 0 1px hsla(0,0%,100%,.2) inset,
               0 0 1px hsla(0,0%,0%,.2);
+  border-radius: 2px;
   color: hsla(0,0%,100%,.9);
 }