diff --git a/style.css b/style.css
index 5c0d9e4..f3b9e82 100644
--- a/style.css
+++ b/style.css
@@ -51,6 +51,9 @@ p {
     align-items: center;
     max-width: 480px;
     margin: 0 auto;
+    width: 100%;
+    padding: 0 20px;
+    box-sizing: border-box;
 }
 
 div.buttons {
@@ -72,6 +75,8 @@ ul.buttons {
     padding-left: 10px;
     display: flex;
     flex-wrap: wrap;
+    padding: 0 20px;
+    box-sizing: border-box;
 }
 
 ul.buttons li {