diff --git a/css/main.css b/css/main.css
index 1353c8f..dd49aca 100644
--- a/css/main.css
+++ b/css/main.css
@@ -11,6 +11,11 @@ body {
     line-height: 1.4;
     -webkit-font-smoothing: antialiased;
     text-rendering: optimizeLegibility;
+
+    width: 80%;
+    max-width: 1024px;
+    margin: auto;
+    line-height: 1.6;
 }
 body > section:last-of-type {
     flex: 1;
@@ -21,10 +26,14 @@ section {
 }
 header h1 {
     font-size: 4.0em;
-    margin: 20px 0;
+    margin: 50px 0 20px 0;
     text-align: center;
 }
 
+section .summary {
+    margin-bottom: 2em;
+}
+
 p {
     margin: 20px 0;
 }