Updated Chrome Apps codelab

chrome/common/extensions/docs/static/sass/_article.scss

 $article-width: 70%;
 $toc-width: 28%;
 
 // TOC on article pages
 .inline-toc {
   line-height: 1.3em;
 
   a,
   a:link,
   a:visited {
@@ skipping 99 matching lines @@
   color: lighten($text, 5%);
   .cc-logo img {
     width: 90px;
     height: 32px;
   }
   .last-updated {
     @include flex(1);
   }
 }
 
+// Multi-step codelabs
+.h1-step { display: block; font-size: 0.5em; line-height: 150%; }
+
+// API roundup on codelabs
+.anchor-link-icon { padding-left: 1px; }
+
 // Large than mobile.
 @media only screen and (min-width: $break-small)  { 
   .inline-toc { 
     position: absolute;
     top: 0;
     width: $toc-width;
     right: 0;
     overflow: auto;
     overflow-x: hidden;
 
@@ skipping 47 matching lines @@
           content: '+';
         }
       }
     }
     .related {
       margin: $default-padding 0;
     }
   }
 }