�式。</p> <div class="language-css extra-class"><pre class="language-css"><code><span class="token selector">div.changeDiv</span> <span class="token punctuation">{</span>
  <span class="token property">background</span><span class="token punctuation">:</span> #eee<span class="token punctuation">;</span>
  <span class="token property">color</span><span class="token punctuation">:</span> #093<span class="token punctuation">;</span>
  <span class="token property">height</span><span class="token punctuation">