iframe{    width: 100%;
    margin: auto;
    padding: 80px 0;
    border: 0;
    height: 300px;}
.shadow{width: 400px;
    margin: auto;}
.sj{    margin-top: 20px;
    clear: both;}
.sj span,.dx span{width: 100px;
    display: inline-block;
    font-size:16px;
}
font{color:#b42221}
input[type="button"]{margin-left:10px;}
.dx{    margin: 20px 0;
    overflow: hidden;}
input[type="submit"]{clear: both;
    margin: auto;
    display: block;}