body,html{margin:0;padding:0;height:100%}#app{height:100vh;display:flex;flex-direction:column}.beian{text-align:center;padding:10px;background-color:#ececec;position:fixed;bottom:0;width:100%;font-size:14px;color:#666}a{color:#565656;text-decoration:none}a:hover{color:#0056ec}