样式：
HTML+CSS+JavaScript仿华为首页
HTML:
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id="border_2"></div><a id="section3_a" href="#"><section id="section3"><img id="section3_img" src="images/bws-cn-800.jpg"/><section><h1>共赢未来 “绿色ICT，绿色发展”峰会</h1><h3>迪拜，Jafza One2021年10月18日</h3><h2>华为携手Informa Tech，与全球运营商、管理机构、合作伙伴、媒体、分析师等共聚一堂，分享全球成功实践，探讨创新的绿色发展解决方案。</h2></section></section></a><a id="section4_a" href="#"><section id="section4"><img id="section4_img" src="./images/ubbf2021-cn.jpg"/><h1>2021全球超宽带高峰论坛</h1><h3>阿联酋，迪拜2021年10月19-20日</h3><h2>在数字化发展洪流中，看超宽带产业如何立足联接，为数字经济发展创造更大的价值。</h2><section></section></section></a><section id="section5"><a href="#"><h1>巴基斯坦总统：巴基斯坦的发展与数字化紧密相连，感谢华为长久以来的支持</h1><h3>2021年11月12日</h3></a><a href="#"><h1>华为、海尔和中国移动联合发布5G先进制造全连接场景化解决方案</h1><h3>2021年11月12日</h3></a><a href="#"><h1>华为举办第二届技术服务伙伴大会</h1><h3>2021年11月11日</h3></a><a href="#"><h1>华为捐赠百万加之职业技能技能券 推动STEM领域女生技能发展</h1><h3>2021年11月10日</h3></a><a href="#"><h1>华为捐赠欧拉 共建数字基础设施开源操作系统</h1><h3>2021年11月19日</h3></a></section><a id="section6_a" href="#"><section 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