diff --git a/theme-arc-blue.css b/theme-arc-blue.css
index a49c8c1..4417d63 100644
--- a/theme-arc-blue.css
+++ b/theme-arc-blue.css
@@ -895,3 +895,11 @@
       background: #7B2115;
       color: #bdbdbd;
   }
+  .repository .diff-detail-box {
+      background: #060639;
+      padding: 7px;
+  }
+  /* Checkbox element, when checked */
+  input[type="checkbox"]:checked {
+      box-shadow: 0 0 0 2px #acacac;
+  }