Give the sidebar minimal width.

Change-Id: I6a4edd89800726a37a9f295a5b50286878325adf
diff --git a/src/main/resources/META-INF/resources/cms2/base.css b/src/main/resources/META-INF/resources/cms2/base.css
index d532e94..0fc7ea8 100644
--- a/src/main/resources/META-INF/resources/cms2/base.css
+++ b/src/main/resources/META-INF/resources/cms2/base.css
@@ -63,7 +63,7 @@
 
 @media (min-width: 30em) {
   body {
-    grid-template-columns: 1fr 3fr;
+    grid-template-columns: auto 3fr;
     grid-template-rows: auto 1fr auto;
     grid-gap: 0;
 
@@ -94,6 +94,9 @@
 
 body > header h1 {
   font-size: 1em;
+
+  margin-left: 10px;
+  margin-right: 10px;
 }
 
 .small-title {