diff --git a/System/Libraries/Css/Tokenizer.HC b/System/Libraries/Css/Tokenizer.HC
index e987361..0161c72 100644
--- a/System/Libraries/Css/Tokenizer.HC
+++ b/System/Libraries/Css/Tokenizer.HC
@@ -1,3 +1,14 @@
+#define CSS_BORDER_NONE 0
+#define CSS_BORDER_HIDDEN 1
+#define CSS_BORDER_DOTTED 2
+#define CSS_BORDER_DASHED 3
+#define CSS_BORDER_SOLID 4
+#define CSS_BORDER_DOUBLE 5
+#define CSS_BORDER_GROOVE 6
+#define CSS_BORDER_RIDGE 7
+#define CSS_BORDER_INSET 8
+#define CSS_BORDER_OUTSET 9
+
 #define CSS_DISPLAY_NONE 0
 #define CSS_DISPLAY_BLOCK 1
 #define CSS_DISPLAY_INLINE 2