语法高亮，滚动条美化，设置页面调整

docs/javascript/Reference/Global_Objects/Date/getFullYear.html

@@ -6,7 +6,7 @@
 <p class="hidden">The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone <a class="external" href="https://github.com/mdn/interactive-examples" rel="noopener">https://github.com/mdn/interactive-examples</a> and send us a pull request.</p>
 <h2 id="Syntax" name="Syntax">语法</h2>
 <pre style="margin-bottom: 0px; padding: 1em; border-left-width: 6px; border-left-style: solid; font-family: Consolas, Monaco, 'Andale Mono', monospace; font-size: 14px; text-shadow: none; direction: ltr; white-space: normal; background-color: rgba(212, 221, 228, 0.498039);"><code class="language-html" style="font-family: Consolas, Monaco, 'Andale Mono', monospace; color: inherit; text-shadow: none; direction: ltr;">dateObj.getFullYear()</code>
-</pre>
+</code></pre>
 <h3 id="Description" name="Description">返回值</h3>
 <p>根据当地时间，返回一个对应于给定日期的年份数字。</p>
 <h2 id="描述">描述</h2>
@@ -14,9 +14,9 @@
 <h2 id="Examples" name="Examples">例子</h2>
 <h3 id="Example:_Using_getFullYear" name="Example:_Using_getFullYear">使用<code>getFullYear()</code></h3>
 <p>下面的例子将当前年份的四位数值分配给变量<code>year</code>。</p>
-<pre class="brush: js">var today = new Date();
+<pre><code  class="language-javascript">var today = new Date();
 var year = today.getFullYear();
-</pre>
+</code></pre>
 <h2 id="规范" style="margin-bottom: 20px; line-height: 30px;">规范</h2>
 <table class="standard-table">
 <tbody>