diff --git a/public/main.css b/public/main.css
index b3541e23..bce304d1 100644
--- a/public/main.css
+++ b/public/main.css
@@ -266,6 +266,22 @@ tbody {
   table-layout: fixed;
 }
 
+#uploaded-file {
+  width: 35%;
+}
+
+#copy-file-list {
+  width: 25%;
+}
+
+#expiry-file-list {
+  width: 21%;
+}
+
+#delete-file-list {
+  width: 12%;
+}
+
 .icon-delete,
 .icon-copy,
 .icon-check {
diff --git a/views/index.handlebars b/views/index.handlebars
index 49a849bb..db6fae7c 100644
--- a/views/index.handlebars
+++ b/views/index.handlebars
@@ -21,10 +21,10 @@
       <thead>
         <tr>
           <!-- htmllint attr-bans="false" -->
-          <th width="35%" data-l10n-id="uploadedFile"></th>
-          <th width="25%" data-l10n-id="copyFileList"></th>
-          <th width="21%" data-l10n-id="expiryFileList"></th>
-          <th width="12%" data-l10n-id="deleteFileList"></th>
+          <th id="uploaded-file" data-l10n-id="uploadedFile"></th>
+          <th id="copy-file-list" data-l10n-id="copyFileList"></th>
+          <th id="expiry-file-list" data-l10n-id="expiryFileList"></th>
+          <th id="delete-file-list" data-l10n-id="deleteFileList"></th>
           <!-- htmllint tag-bans="$previous" -->
         </tr>
       </thead>