body{margin:0;padding:0;background:#fff; color:#333; font-family:Arial,'微软雅黑','宋体',sans-serif}
*{box-sizing: border-box; }
.main{ margin:0 auto;  width:100%;max-width:600px;top:calc(50% - 15em);position: relative; }
.alert-box{display:block;position:relative;margin:auto;padding:30px;border-radius:5px;background:#FFF;border: 1px solid #ddd;box-shadow: 1px 1px 5px rgb(0 0 0 / 10%);}
.alert-head{font-size:18px;font-weight: bold;}
.alert-concent{font-size:14px;margin:0;}
.alert-concent p{line-height:150%;margin:20px 0;}
.alert-concent input{font-size:14px;width:100%;border:0;padding:0;outline:none;cursor: pointer;}
.alert-btn{overflow: hidden;padding-top:20px;  line-height:36px;border-top:1px solid #ddd;}
.alert-btn a{border-radius:5px;background-color:#0069cc;padding:0 20px; color:#FFF;font-size:14px;text-decoration:none;float: right;text-align: center;}
.alert-btn a:hover{background-color:#0061bd} 
 #js-sec-text{color:#e60000;font-size: 18px;padding:0 2px;}