diff --git a/templates/repo/pulls/tab_menu.tmpl b/templates/repo/pulls/tab_menu.tmpl
index b55b3b0040..ef6bc4e082 100644
--- a/templates/repo/pulls/tab_menu.tmpl
+++ b/templates/repo/pulls/tab_menu.tmpl
@@ -1,4 +1,5 @@
-<div class="ui top attached pull tabular stackable menu">
+<div class="ui pull tabs container">
+	<div class="ui top attached pull tabular menu">
 	<a class="item {{if .PageIsPullConversation}}active{{end}}" href="{{.Issue.Link}}">
 		{{svg "octicon-comment-discussion"}}
 		{{$.locale.Tr "repo.pulls.tab_conversation"}}
@@ -15,3 +16,5 @@
 		<span class="ui small label">{{if .NumFiles}}{{.NumFiles}}{{else}}-{{end}}</span>
 	</a>
 </div>
+<div class="ui tabs divider"></div>
+</div>
diff --git a/web_src/css/repo.css b/web_src/css/repo.css
index 676d748184..b5a14e8f72 100644
--- a/web_src/css/repo.css
+++ b/web_src/css/repo.css
@@ -747,8 +747,15 @@
   right: 1px;
 }
 
+.repository.view.issue .pull.tabs.container {
+  width: 100%;
+  max-width: 100%;
+}
+
 .repository.view.issue .pull.tabular.menu {
-  margin-bottom: 1rem;
+  margin-bottom: 0;
+  overflow-x: auto;
+  overflow-y: hidden;
 }
 
 .repository.view.issue .pull.tabular.menu .svg {