复制代码代码如下: <!doctype html public “-//w3c//dtd xhtml 1.0 transitional//en” “http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd”> <html lang=”us-en”> <head> <title>css选项卡(html组件)</title> <link rel=”shortcut icon” href=”favicon.ico” type=”image/x-icon” /> <meta h