.layer {
    position: fixed;
    top:0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    width:360px;
    height:220px;
    background:#fff;
    border:1px solid #39476E;
    display: none;
    z-index: 999;
}
.title {
    width:100%;
    height:30px;
    line-height: 26px;
    background: #3A4054;
    padding: 0 10px 0 5px;
    font-size: 16px;
    color: #fff;
}
.title .logo {
    float: left;
}
.title .close {
    float: right;
    cursor: pointer;
}
.title .logo img {
    vertical-align: middle;
    margin-right: 10px;
}
.prompt {
    width: 358px;
    height:130px;
    display: table-cell;
    vertical-align:middle;
    font-size: 16px;
    color: #333;
    text-align: center;
}
.ensure {
    width: 80px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    background: #009BFF;
    cursor: pointer;
    margin: 0 auto;
    font-size: 14px;
    color: #fff;
}