diff --git a/config/nvim/after/syntax/css.vim b/config/nvim/after/syntax/css.vim
new file mode 100644
index 0000000..e13c8f7
--- /dev/null
+++ b/config/nvim/after/syntax/css.vim
@@ -0,0 +1,7 @@
+" css.vim
+" Eryn Wells <eryn@erynwells.me>
+
+syn match cssLogicalBoxProp contained "\<padding-\(block\|inline\)\=\(-\(start\|end\)\)\=\>"
+syn match cssLogicalBoxProp contained "\<margin-\(block\|inline\)\=\(-\(start\|end\)\)\=\>"
+
+hi def link cssLogicalBoxProp cssProp