appview/pages: fix missing borders in submission headers

Signed-off-by: oppiliappan <[e-mail]>

appview/pages/templates/repo/pulls/pull.html

···
         text-white md:text-black md:dark:text-white
         bg-green-600 dark:bg-green-700
         md:bg-white md:dark:bg-gray-800
-        drop-shadow-sm
-         border-t md:border-x md:border-t-0 border-gray-200 dark:border-gray-700">
+        drop-shadow-sm border-t md:border-x border-gray-200 dark:border-gray-700">
         <h2 class="">History</h2>
         {{ template "subsPanelSummary" $ }}
       </summary>
···
   {{ $root := index . 3 }}
   {{ $round := $item.RoundNumber }}
   <div class="
-    w-full shadow-sm bg-gray-50 dark:bg-gray-900 border-2 border-t-0
+    w-full shadow-sm bg-gray-50 dark:bg-gray-900 border border-t-0
     {{ if eq $round 0 }}rounded-b{{ else }}rounded{{ end }}
     {{ if eq $round $root.ActiveRound }}
       border-blue-200 dark:border-blue-700
···
   {{ $root := index . 3 }}
   {{ $round := $item.RoundNumber }}
   <div class="
-    {{ if eq $round 0 }}rounded-b{{ else }}rounded{{ end }}
+    {{ if ne $round 0 }}rounded-t{{ end }}
     px-6 py-4 pr-2 pt-2
     bg-white dark:bg-gray-800
+
     {{ if eq $round $root.ActiveRound }}
-       border-t-2 border-blue-200 dark:border-blue-700
+       border-t border-t-blue-200 dark:border-t-blue-700
     {{ else }}
-      border-b-2 border-gray-200 dark:border-gray-700
+       border-t border-t-gray-200 dark:border-t-gray-700
     {{ end }}
+
     flex gap-2 sticky top-0 z-20">
     <!-- left column: just profile picture -->
     <div class="flex-shrink-0 pt-2">