diff --git a/tools/server/public_simplechat/simplechat.css b/tools/server/public_simplechat/simplechat.css
index 9125771d5b..a26ab4976d 100644
--- a/tools/server/public_simplechat/simplechat.css
+++ b/tools/server/public_simplechat/simplechat.css
@@ -67,7 +67,7 @@
     min-height: 40vh;
 }
 button {
-    min-width: 8vw;
+    padding-inline: 2vmin;
 }
 
 .sameline {