html, body {height:100%;}
.dialog {display:none;position:relative;height:100%;}
.mask {position:fixed;top:0;left:0;z-index:2;width:100%;height:100%;background-color:rgba(0,0,0,0.4);}
.popup {position:absolute;z-index:3;top:50%;left:50%;transform:translate(-50%,-50%);background-color:white;}
.popup h2 {font-weight:bold;color:red;font-size:15px;}
.popup span {font-weight:bold;color:#000;font-size:15px;cursor:pointer;position:absolute;top:10px;right:10px;}
.popup span:hover {color:red;}
.popup p {font-weight:bold;font-size:10px;}