[css-cascade-4] Fix broken links

Author: fantasai

css-cascade/Overview.html

@@ -320,7 +320,7 @@ <h3 class="heading settled" data-level="2.1" id="conditional-import"><span class
 <pre class="lang-css highlight"><span class="k">@import</span> <span class="s2">"mystyle.css"</span> <span class="nt">supports</span><span class="o">(</span><span class="nt">display</span><span class="o">:</span> <span class="nt">flex</span><span class="o">)</span><span class="p">;</span>
 <span class="k">@import</span> <span class="s2">"mystyle.css"</span> <span class="nt">supports</span><span class="o">((</span><span class="nt">display</span><span class="o">:</span> <span class="nt">flex</span><span class="o">))</span><span class="p">;</span></pre>
    </div>
-   <p>The evaluation and full syntax of the <a data-link-type="dfn" href="#import-conditions">import conditions</a> are defined by the <a href="http://www.w3.org/TR/css3-mediaqueries/">Media Queries</a> <a data-link-type="biblio" href="#biblio-mediaq">[MEDIAQ]</a> and <a href="http://www.w3.org/TR/css-conditional/">CSS Conditional Rules</a> <a data-link-type="biblio" href="#biblio-css3-conditional">[CSS3-CONDITIONAL]</a> specifications.</p>
+   <p>The evaluation and full syntax of the <a data-link-type="dfn" href="#import-conditions">import conditions</a> are defined by the <a href="http://www.w3.org/TR/css3-mediaqueries/">Media Queries</a> <a data-link-type="biblio" href="#biblio-mediaq">[MEDIAQ]</a> and <a href="http://www.w3.org/TR/css3-conditional/">CSS Conditional Rules</a> <a data-link-type="biblio" href="#biblio-css3-conditional">[CSS3-CONDITIONAL]</a> specifications.</p>
    <h3 class="heading settled" data-level="2.2" id="import-processing"><span class="secno">2.2. </span><span class="content"> Processing Stylesheet Imports</span><a class="self-link" href="#import-processing"></a></h3>
    <p>When the same style sheet is imported or linked to a document in multiple places,
 	user agents must process (or act as though they do) each link
@@ -334,10 +334,10 @@ <h3 class="heading settled" data-level="2.2" id="import-processing"><span class=
    <p>The <a data-link-type="dfn" href="http://www.w3.org/TR/css-syntax-3/#environment-encoding">environment encoding</a> of an imported style sheet is the encoding of the style sheet that imported it. <a data-link-type="biblio" href="#biblio-css3syn">[CSS3SYN]</a></p>
    <h3 class="heading settled" data-level="2.3" id="content-type"><span class="secno">2.3. </span><span class="content"> Content-Type of CSS Style Sheets</span><a class="self-link" href="#content-type"></a></h3>
    <p>The processing of imported style sheets depends on the actual type of the linked resource.
-	If the resource does not have <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/fetching-resources.html#content-type">Content-Type metadata</a>,
-	or the host document is in <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/infrastructure.html#quirks-mode">quirks mode</a> and has the <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/origin-0.html#same-origin">same origin</a> as the imported style sheet,
+	If the resource does not have <a href="https://html.spec.whatwg.org/multipage/infrastructure.html#content-type">Content-Type metadata</a>,
+	or the host document is in <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/infrastructure.html#quirks-mode">quirks mode</a> and has the <a href="https://html.spec.whatwg.org/multipage/browsers.html#same-origin">same origin</a> as the imported style sheet,
 	the type of the linked resource is <code>text/css</code>.
-	Otherwise, the type is determined from its <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/fetching-resources.html#content-type">Content-Type metadata</a>.</p>
+	Otherwise, the type is determined from its <a href="https://html.spec.whatwg.org/multipage/infrastructure.html#content-type">Content-Type metadata</a>.</p>
    <p>If the linked resource’s type is <code>text/css</code>,
 	it must be interpreted as a CSS style sheet.
 	Otherwise, it must be interpreted as a network error.</p>
@@ -1188,7 +1188,7 @@ <h3 class="no-num heading settled" id="normative"><span class="content">Normativ
    <dd>Tab Atkins Jr.; Simon Sapin. <a href="http://www.w3.org/TR/css-syntax-3/">CSS Syntax Module Level 3</a>. 20 February 2014. CR. URL: <a href="http://www.w3.org/TR/css-syntax-3/">http://www.w3.org/TR/css-syntax-3/</a>
    <dt id="biblio-css-text-3"><a class="self-link" href="#biblio-css-text-3"></a>[CSS-TEXT-3]
    <dd>Elika Etemad; Koji Ishii. <a href="http://www.w3.org/TR/css-text-3/">CSS Text Module Level 3</a>. 10 October 2013. LCWD. URL: <a href="http://www.w3.org/TR/css-text-3/">http://www.w3.org/TR/css-text-3/</a>
-   <dt id="biblio-css-values"><a class="self-link" href="#biblio-css-values"></a>[CSS-VALUES]
+   <dt id="biblio-css-values-3"><a class="self-link" href="#biblio-css-values-3"></a>[CSS-VALUES]
    <dd>Tab Atkins Jr.; Elika Etemad. <a href="http://www.w3.org/TR/css-values/">CSS Values and Units Module Level 3</a>. 11 June 2015. CR. URL: <a href="http://www.w3.org/TR/css-values/">http://www.w3.org/TR/css-values/</a>
    <dt id="biblio-css-writing-modes-3"><a class="self-link" href="#biblio-css-writing-modes-3"></a>[CSS-WRITING-MODES-3]
    <dd>Elika Etemad; Koji Ishii. <a href="http://www.w3.org/TR/css-writing-modes-3/">CSS Writing Modes Level 3</a>. 15 December 2015. CR. URL: <a href="http://www.w3.org/TR/css-writing-modes-3/">http://www.w3.org/TR/css-writing-modes-3/</a>