No padding for embed

Author: ebidel

step-style.html

@@ -50,6 +50,10 @@
         padding: 24px;
       }
 
+      :host-context(google-codelab[theme="minimal"]) .instructions .inner {
+        padding: 0 24px;
+      }
+
       @media (max-width: 800px) {
         .instructions {
           margin: 0 0 16px 0;