diff --git a/after/syntax/css/css3-writing-modes.vim b/after/syntax/css/css3-writing-modes.vim
index 2a7d147..2400f7f 100644
--- a/after/syntax/css/css3-writing-modes.vim
+++ b/after/syntax/css/css3-writing-modes.vim
@@ -1,7 +1,7 @@
 " TODO: create cssWritingModeProp group and cssWritingModeAttr group
 syn match cssFontProp contained "\<text-\(orientation\|combine-\(horizontal\|mode\)\)\>"
 syn match cssFontProp contained "\<writing-mode\>"
-syn keyword cssFontAttr contained before after numeric digits alpha latin alphanumeric isolate plaintext
+syn keyword cssFontAttr contained before after numeric alpha latin alphanumeric isolate plaintext
 syn match cssFontAttr contained "\<\(\(min\|max\|fit\)-content\|fill-available\)\>"
 syn match cssFontAttr contained "\<\(\(no-\)\=compress\|use-glyphs\)\>"
 syn match cssFontAttr contained "\<\(mixed-right\|upright\|sideways\(-right\|-left\)\=\|use-glyph-orientation\)\>"