diff --git a/style.css b/style.css
index 5438ec1..a25e5f1 100644
--- a/style.css
+++ b/style.css
@@ -19,7 +19,7 @@ a.btn {
   background-color: #603060;
   display: inline-block;
   width: 10em;
-  max-width: calc(100vw - 30px);
+  max-width: 90vw;
   min-width: fit-content;
   padding: 10px;
   margin: 0;