.dialog{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    display: none;
}
.dialog_bg{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99;
    background-color: black;
    opacity: 0.7;
    display: none;
}
.dialog_box{
    width: 600px;
    border-radius: 7px;
    margin: 15% auto 0 auto;
    background-color: white;
}
.dialog_box .dialog_head{
    padding: 15px;
    border-bottom: 1px solid #ddbbdd;
}
.dialog_box .dialog_body{
    padding: 15px;
}
.dialog_box .dialog_foot{
    padding: 10px 15px;
    border-top: 1px solid #dbdbdb;
    text-align: right;
}