diff --git a/src/css/header.css b/src/css/header.css
index 10b659b305b0b2957ae1aa046d861fe4069ccc60..38b8ee5bec9997fce815ce69f3f64fd4a7df2d0a 100644
--- a/src/css/header.css
+++ b/src/css/header.css
@@ -19,7 +19,7 @@ body {
   z-index: var(--z-index-navbar);
   max-height: 5rem;
   border-bottom: 1px solid var(--color-blue-30);
-  transition: box-shadow .2s;
+  transition: box-shadow 0.2s;
 }
 
 .navbar .active {