<html><head> <meta charset="utf-8"> <title>蝴蝶教程（cainiaoya.com）</title> <style> div ~ p { background-color: yellow; } </style></head><body><p>段1。</p><div> <code>Some code.</code> <p>段2。</p></div><p>段3。</p><code>Some code.</code><p>段4。</p></body></html>