diff --git a/lib/footer.ml b/lib/footer.ml
index ebb1967..2e46f6c 100644
--- a/lib/footer.ml
+++ b/lib/footer.ml
@@ -40,6 +40,7 @@ let to_element footer =
       "cellpadding", "0";
       "cellspacing", "0";
       "role", "presentation";
+      "width", "100%";
     ]
     ~children:[Element.Private.make @@ Element.Private.builder
       ~tag:"tr"
diff --git a/test/golden/footer.html b/test/golden/footer.html
index ae026af..ca57e0e 100644
--- a/test/golden/footer.html
+++ b/test/golden/footer.html
@@ -1,8 +1,8 @@
 <!-- Footer Component Golden Tests -->
 
 <!-- Basic footer without background -->
-<table border="0" cellpadding="0" cellspacing="0" role="presentation"><tr><td>© 2024 Company Name</td></tr></table>
+<table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%"><tr><td>© 2024 Company Name</td></tr></table>
 
 <!-- Footer with background color -->
-<table border="0" cellpadding="0" cellspacing="0" role="presentation"><tr><td bgcolor="#1f2937">© 2024 Company Name. All rights reserved.</td></tr></table>
+<table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%"><tr><td bgcolor="#1f2937">© 2024 Company Name. All rights reserved.</td></tr></table>
 
diff --git a/test/structure_tests.ml b/test/structure_tests.ml
index 26309f0..15f9600 100644
--- a/test/structure_tests.ml
+++ b/test/structure_tests.ml
@@ -381,6 +381,7 @@ let test_footer_string_shortcut () =
   let html = Element.to_html (Footer.to_element footer) in
 
   assert_test "Footer (string): table wrapper present" (html_contains html "<table");
+  assert_test "Footer (string): width=100% on outer table" (html_contains html "width=\"100%\"");
   assert_test "Footer (string): td cell present" (html_contains html "<td");
   assert_test "Footer (string): text content rendered" (html_contains html "© 2024 Example")
 
@@ -392,6 +393,7 @@ let test_footer_of_children () =
   ] in
   let html = Element.to_html (Footer.to_element footer) in
 
+  assert_test "Footer (children): width=100% on outer table" (html_contains html "width=\"100%\"");
   assert_test "Footer (children): first paragraph rendered" (html_contains html "line 1");
   assert_test "Footer (children): second paragraph rendered" (html_contains html "line 2");
   assert_test "Footer (children): paragraph tags present" (html_contains html "<p")