Updated spec style to support wide screens

draft.html

@@ -12,7 +12,8 @@
     i { font-style: normal; }
 
     body {
-      background-image: none;
+		background-image: url('http://www.w3.org/StyleSheets/TR/logo-unofficial.png');
+		max-width: 60em; margin-left: auto; margin-right: auto;
     }
 
     .hidden {
@@ -279,7 +280,7 @@ <h3 id="token-stream-reference"><span class="secno">2.2. </span> Token
       property declaration to reference, by the mean of a <dfn>provider</dfn>
       and an unique <dfn>name</dfn>, a <a href="#token-stream">token stream</a>
       called the <dfn id="provided-value">provided value</dfn> and, optionally,
-      provides a second token stream called the <dfn id="fallback-value">fallback
+      provides a second token stream called the <dfn id="fallback-value">fallback
         value</dfn>.</p>
     <p>If a declaration, once all token stream references are substituted in, is
       invalid, then the declaration is <a href="#invalid-at-computed-value-time"><i>invalid
@@ -626,7 +627,7 @@ <h3 id="parent-ref"><span class="secno">3.3. </span> Parent's Property
       reference the value that a property has on the parent element, rather than
       on the element itself. This can be accomplished with the ‘<code class="css">$parent()</code>’
       notation: </p>
-    <p>The ‘<code class="css">parent</code>’ <a href="attachment-identifier">provider</a>
+    <p>The ‘<code class="css">parent</code>’ <a href="#attachment-identifier">provider</a>
       allows to reference properties applying on the parent of the element the
       property it is declared in applies, if such parent exists. If it doesn't,
       then the referenced token stream is <a href="#invalid-token-stream">invalid</a>.</p>