.option-top {
    content: '';
    position: absolute;
    border-bottom: 10px solid #B61D22;
    border-top: 10px solid transparent;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    top: 80px;
    left: -20px;
    left: calc(15% + 514px + ((70% - 1008px) / 8) * 4);
    transition: all .5s;
}

.project-main {
    width: 100%;
    background: #F7F7F7;
}

.project-main-bg {
    background: url(.././img/topproject.jpg) center no-repeat;
    /*height: 300px;*/
    /*width: 100%;*/
    /*background-size: 100% 100%;*/
    position: relative;
    top: 0;
    z-index: 1;
    left: 50%;
    width: 1920px;
    height: 300px;
    margin-left: -960px;
}

.project-main-content {
    box-sizing: border-box;
    /* padding: 60px 15%;*/
    padding-top: 40px;
    padding-bottom: 80px;
    width: calc(100% - 520px);
    min-width: 1200px;
    margin: 0 auto;
}

.content-title {
    font-size: 36px;
    font-weight: bold;
    color: #333;
}

.content-title2 {
    font-size: 18px;
    color: #999;
    margin-top: 10px;
}

.content-info {
    width: 100%;
    display: flex;
    justify-content: flex-start;
    margin-top: 40px;
    flex-wrap: wrap;
}

.content-info > div {
    margin-right: 30px;
}

.content-info-item {
    width: 30.5%;
    margin-bottom: 40px;
}

.content-info-item-img {
    /*background: url(https://lanhu-dds-backend.oss-cn-beijing.aliyuncs.com/merge_image/imgs/ba851c551a7045c1bae6ec41e2cf6446_mergeImage.png) center no-repeat;*/
    width: 100%;
    height: 290px;
}

.content-info-item-title {
    color: #2B2C2D;
    font-size: 18px;
    padding: 25px 0;
    text-align: center;
    background: #FFFFFF;
    font-weight: bold;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.info-contentRight-option {
    width: 100%;
    /*box-sizing: border-box;*/
    /*padding: 0 25%;*/
    /*padding-left: 0;*/
    display: flex;
    /*margin-top: 50px;*/
    justify-content: center;
}

.info-contentRight-option > div {
    margin: 10px;
}

.info-contentRight-option > .optionActive {
    background: #B61D22;
    color: #fff;
}

.info-contentRight-option-item {
    padding: 5px 15px;
    background: #E8E8E8;
}