语法高亮，滚动条美化，设置页面调整

docs/javascript/Reference/Global_Objects/Number/MAX_VALUE.html

@@ -29,11 +29,11 @@
 <h2 id="Examples" name="Examples">示例</h2>
 <h3 id="Example:_Using_MAX_VALUE" name="Example:_Using_MAX_VALUE">例子：使用 <code>MAX_VALUE</code></h3>
 <p>下面的代码求两个数值的乘积。如果结果小于等于 <code>MAX_VALUE</code>，则调用 <code>func1</code> 函数；否则，调用 <code>func2</code> 函数。</p>
-<pre class="brush: js">if (num1 * num2 &lt;= Number.MAX_VALUE) {
+<pre><code  class="language-javascript">if (num1 * num2 &lt;= Number.MAX_VALUE) {
    func1();
 } else {
    func2();
-}</pre>
+}</code></pre>
 <h2 id="规范">规范</h2>
 <table class="standard-table">
 <tbody>