完整的html代码,html5页面如何实现点击复制的功能（完整代码）

完整的html代码,html5页面如何实现点击复制的功能（完整代码）详细介绍

/*us-banner*/.py-aboutUs .aboutUs-ele .us-banner .usban-ula li{ width: 240px; height: 86px; line-height: 86px; background: #05dafb; border-radius: 5px; margin-bottom: 11px; text-align: center; font-size: 17px;}.py-aboutUs .aboutUs-ele .us-banner .usban-ula .hover-li{ background: white;}.py-aboutUs .aboutUs-ele .us-banner .usban-ula li:last-child{ margin-bottom: 0;}.usban-ulb{ width: 384px; height: 244px; overflow: hidden; position: relative; margin-top: 18px;}.usban-ulb>a{ display: block; width: 384px; height: 244px; position: absolute; left: 0; top: 0; z-index: 9;}.usban-ulb>a:first-child{ z-index: 30;}.usban-ulb>a img{ width: 100%; height: 100%;}.usban-ulb>a .usban-ula-p{ width: 384px; line-height: 20px; background: rgba(0,0,0,0.7); font-size: 12px; text-align: left; color: white; box-sizing: border-box; padding: 3px 10px; position: absolute; bottom: 0; left: 0; z-index: 10;}.py-aboutUs .aboutUs-ele .eleven-btn{ width: 267px; height: 65px; line-height: 65px; background-size: 100% 100%; margin: 43px auto; font-size: 18px;}.py-aboutUs .aboutUs-ele .usEle-learn{ width: 1200px; height: 810px; margin: 120px auto;}