原来: < link rel = "stylesheet" href = "https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity = "sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin = "anonymous" > <!-- 可选的 Bootstrap 主题文件(一般不用引入) --> < link rel = "stylesheet" href = "https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity = "sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin = "anonymous" > < script src = 'https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js' ></ script > <!-- 最新的 Bootstrap 核心 JavaScript 文件 --> < script src = "https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity = "sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin = "anonymous" ></ script > 替换成: < link rel = "stylesheet" href = "https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" > <!-- 可选的 Bootstrap 主题文件(一般不用引入) --> < link rel = "stylesheet" href = "https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" > < script src = 'https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js' ></ script > <!-- 最新的 Bootstrap 核心 JavaScript 文件 --> < script src = "https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js" ></ script > |