diff --git a/chrome/content/zotero-platform/unix/tab.css b/chrome/content/zotero-platform/unix/tab.css new file mode 100644 index 000000000..e69de29bb diff --git a/chrome/content/zotero-platform/unix/tagselector.css b/chrome/content/zotero-platform/unix/tagselector.css new file mode 100644 index 000000000..e69de29bb diff --git a/chrome/content/zotero-platform/win/tab.css b/chrome/content/zotero-platform/win/tab.css new file mode 100644 index 000000000..e69de29bb diff --git a/chrome/content/zotero-platform/win/tagselector.css b/chrome/content/zotero-platform/win/tagselector.css new file mode 100644 index 000000000..e69de29bb