diff --git a/src/web/vaev-base/page.h b/src/web/vaev-base/page.h
index 3468c2f..0b2b769 100644
--- a/src/web/vaev-base/page.h
+++ b/src/web/vaev-base/page.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <karm-base/opt.h>
+
 namespace Vaev {
 
 // https://drafts.csswg.org/css-page/#marks
@@ -7,37 +9,38 @@ enum struct PageMarks {
     NONE,
     CROSS,
     BOX,
+
+    _LEN,
 };
 
 // https://drafts.csswg.org/css-page/#margin-boxes
-enum struct PageMargin {
-    NONE,
+#define FOREACH_PAGE_MARGIN(ITER)                    \
+    ITER(TOP, "top")                                 \
+    ITER(TOP_LEFT_CORNER, "top-left-corner")         \
+    ITER(TOP_LEFT, "top-left")                       \
+    ITER(TOP_CENTER, "top-center")                   \
+    ITER(TOP_RIGHT, "top-right")                     \
+    ITER(TOP_RIGHT_CORNER, "top-right-corner")       \
+    ITER(RIGHT, "right")                             \
+    ITER(RIGHT_TOP, "right-top")                     \
+    ITER(RIGHT_MIDDLE, "right-middle")               \
+    ITER(RIGHT_BOTTOM, "right-bottom")               \
+    ITER(BOTTOM, "bottom")                           \
+    ITER(BOTTOM_RIGHT_CORNER, "bottom-right-corner") \
+    ITER(BOTTOM_RIGHT, "bottom-right")               \
+    ITER(BOTTOM_CENTER, "bottom-center")             \
+    ITER(BOTTOM_LEFT, "bottom-left")                 \
+    ITER(BOTTOM_LEFT_CORNER, "bottom-left-corner")   \
+    ITER(LEFT, "left")                               \
+    ITER(LEFT_BOTTOM, "left-bottom")                 \
+    ITER(LEFT_MIDDLE, "left-middle")                 \
+    ITER(LEFT_TOP, "left-top")
 
-    TOP, // NOSPEC: Parent of top-left, top-center, and top-right
-    TOP_LEFT_CORNER,
-    TOP_LEFT,
-    TOP_CENTER,
-    TOP_RIGHT,
-    TOP_RIGHT_CORNER,
-
-    RIGHT, // NOSPEC: Parent of top-right, right-middle, and right-bottom
-    RIGHT_TOP,
-    RIGHT_MIDDLE,
-    RIGHT_BOTTOM,
-
-    BOTTOM, // NOSPEC: Parent of bottom-left, bottom-center, and bottom-right
-    BOTTOM_RIGHT_CORNER,
-    BOTTOM_RIGHT,
-    BOTTOM_CENTER,
-    BOTTOM_LEFT,
-    BOTTOM_LEFT_CORNER,
-
-    LEFT, // NOSPEC: Parent of bottom-left, left-middle, and left-top
-    LEFT_BOTTOM,
-    LEFT_MIDDLE,
-    LEFT_TOP,
-
-    _LEN,
+enum struct PageMargin {
+#define ITER(ID, ...) ID,
+    FOREACH_PAGE_MARGIN(ITER)
+#undef ITER
+        _LEN,
 };
 
 // https://drafts.csswg.org/css-page/#page-orientation-prop
@@ -49,4 +52,8 @@ enum struct PageOrientation {
     _LEN
 };
 
+struct Page {
+    Opt<PageMargin> margin;
+};
+
 } // namespace Vaev