diff --git a/src/component/layout/index.css b/src/component/layout/index.css
index 42781071..68298dd1 100644
--- a/src/component/layout/index.css
+++ b/src/component/layout/index.css
@@ -3,7 +3,7 @@
 }
 
 :root {
-  --layout-space: 0.05rem;
+  --layout-space: 0.05em;
   --layout-line-width: 0.25em;
 }