diff --git a/site/css/simple.css b/site/css/simple.css
index e2e8418..5439c0a 100644
--- a/site/css/simple.css
+++ b/site/css/simple.css
@@ -1,15 +1,15 @@
 body{
-	margin: auto;
 	padding: 0 1em;
 	line-height: 1.6;
+	display: flex;
+	flex-direction: column;
+	align-items: center;
 }
 main {
-	margin: 0 auto;
 	max-width: 40em;
 }
 header, footer {
-	max-width: 40em;
-	margin: auto;
+	width: 40em;
 	text-align: center;
 }
 header {