.cengbg1{
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}

.group_qr{
    top:400px;
    width: 74%;
    background-color: #fff;
    border-radius: 7px;
    position: fixed;
    padding: 15px 0 0;
    left: 50%;
    transform: translate(-50%,-50%);
    z-index: 100;
}

.group_qr p{
    font-size: 14px;
    color: #666;
    text-align: center;
    margin: 13px 0;
    line-height: 20px;
}

.group_qr p.tktit{
    font-size: 18px;
    color: #333;
    text-align: center;
}

.decisionbox{
    border-top: 1px solid #ddd;
}

.decisionbox button{
    width: 50%;
    border: 1px solid transparent;
    outline: none;
    float: left;
    background: #fff;
    height: 46px;
    line-height: 46px;
}

.decisionbox button.noperfect{
    border-right: 1px solid #ddd;
}

.decisionbox button.perfect{
    color: #0099FF;
}
.imgBox{
    width:100%;
    height:240px;
}
.imgBox img{
    display: block;
    width:200px;
    height:200px;
    margin:20px auto 0;
}