.box-container {
    position: relative;
    background: #327443 url("https://julyedu-cdn.oss-cn-beijing.aliyuncs.com/newyear20/PC/sd_nr_bj2.png") repeat-y;
    background-size: 100% auto;
    padding: 14px 0;

    .image-box {
        height: 100%;

    }

    @mixin common-deco($bg) {
        content: '';
        position: absolute;
        left: 0;
        width: 100%;
        height: 14px;
        display: block;
        background: url($bg) no-repeat;
        background-size: 375px auto;
    }

    &::before {
        @include common-deco("https://julyedu-cdn.oss-cn-beijing.aliyuncs.com/newyear20/PC/sd_nr_bj1.png");
        top: 0;
    }

    &::after {
        @include common-deco("https://julyedu-cdn.oss-cn-beijing.aliyuncs.com/newyear20/PC/sd_nr_bj3.png");
        bottom: 0;
    }
}
