diff --git a/src/runtime/ui.css b/src/runtime/ui.css
index dd9fa4be..fdca2d6f 100644
--- a/src/runtime/ui.css
+++ b/src/runtime/ui.css
@@ -6,6 +6,8 @@ a:focus-visible {
   @apply outline-primary-500 dark:outline-primary-400;
 }
 
+::selection { @apply bg-primary-500/40 dark:bg-primary-400/40; }
+
 select {
   background-image: none;
 }