.sbparty {
    margin: 0;
    padding: 0;
    margin-bottom: 5px;
}
    .sbparty .service-container {
        width: 100%;
        height: 0;
        padding-bottom: calc(70% + 6px);
        overflow: hidden;
        position: relative;
        border: 1px solid #ffffff;
    }
    .sbparty .service {
        width: 100%;
        position: absolute;
        transform-style: preserve-3d;
        -webkit-transform-style: preserve-3d;
        -moz-transform-style: preserve-3d;
        -o-transform-style: preserve-3d;
        transition: transform 1s;
        -webkit-transition: -webkit-transform 1s;
        -moz-transition: -moz-transform 1s;
        -o-transition: -o-transform 1s;
    }

    .sbparty .service-front, .sbparty .service-back {
        display: block;
        position: absolute;
        width: 100%;
        backface-visibility: hidden;
        -webkit-backface-visibility: hidden;
        -moz-backface-visibility: hidden;
        -o-backface-visibility: hidden;
    }
 .sbparty .service-back {
        transform: rotateY( 180deg );
        -webkit-transform: rotateY( 180deg );
        -moz-transform: rotateY( 180deg );
        -o-transform: rotateY( 180deg );
        overflow: hidden;
        text-overflow: ellipsis;
    }

        .sbparty .service-front img, .sbparty .service-back img {
            width: calc(100% - 20px);
            margin: 10px;
        }
.sbpartybt {
    font-weight: 600;
    font-family: "Microsoft YaHei",微软雅黑,"Microsoft JhengHei",华文细黑,STHeiti,MingLiu, 'Arbutus Slab', serif;
    font-size: 18px;
    color:#ffffff;
    text-align: center;
    padding-bottom:5px
}
.flipped {
    transform: rotateY( 180deg );
    -webkit-transform: rotateY( 180deg );
    -moz-transform: rotateY( 180deg );
    -o-transform: rotateY( 180deg );
}