diff --git a/styles/default.css b/styles/default.css
index 1d026f9..b97906c 100644
--- a/styles/default.css
+++ b/styles/default.css
@@ -34,7 +34,8 @@ a
 
     width: 800px;
     min-height: calc(100vh - 120px);
-    margin-left: calc(50vw - 400px);
+    margin-right: auto;
+    margin-left: auto;
     padding-top: 100px;
 }
 
@@ -46,7 +47,7 @@ a
     z-index: 10;
     top: 0;
 
-    width: 100vw;
+    width: 100%;
     height: 70px;
 
     vertical-align: middle;