<html><head><style>.tab div { display: none;}.tab div:target { display: block; border: 2px solid darkorange; background-color: beige;}</style></head><body><h1>:target 演示</h1><div class="tab"><a href="#link1">链接 1</a> <a href="#link2">链接 2</a><a href="#link3">链接 3</a><div id="link1"> <h3>链接 1 的内容</h3> <p>你好，世界！</p></div><div id="link2"> <h3>链接 2 的内容</h3> <h4>非常成功！</h4></div><div id="link3"> <h3>链接 3 的内容</h3> <p>耶！</p></div></div></body></html>