.contain-tab-change {
    width: 100%;
    display: flex;
    justify-content: center;
}

.contain-tab-change li {
    width: 100px;
    height: 35px;
    font-size: 16px;
    font-family: PingFangSC-Regular, PingFang SC;
    font-weight: 400;
    color: #333333;
    line-height: 22px;
    text-align: center;
    margin: 0 5px;
    cursor: pointer;
}

.contain-tab-change .contain-tab-change-sel {
    border-bottom: 3px solid #1F7BFF;
    color: #1F7BFF;
}

.contain-box {
    background-color: #F5F7FA !important;
}

.contain-box .active {
    display: block;
}

.contain-box .list {
    width: 1200px;
    margin: 0 auto;
    padding-top: 40px;
    padding-bottom: 55px;
    display: none;
}

.contain-box .active {
    display: flex;
}

.contain-box .list .list-left h3 {
    width: 720px;
    font-size: 14px;
    font-family: PingFangSC-Semibold, PingFang SC;
    font-weight: 600;
    color: #111111;
    margin-bottom: 20px;
    line-height: 22px;
}

.contain-box .list .list-left p {
    width: 720px;
    font-size: 14px;
    font-family: PingFangSC-Regular, PingFang SC;
    font-weight: 400;
    color: #333333;
    line-height: 22px;
    margin-left: 14px;
    margin-bottom: 10px;
    position: relative;
}

.contain-box .list .list-left span {
    display: inline-block;
    width: 720px;
    font-size: 14px;
    font-family: PingFangSC-Regular, PingFang SC;
    font-weight: 400;
    color: #333333;
    line-height: 22px;
    margin-bottom: 10px;
    position: relative;
}

.contain-box .list .list-left p::before {
    display: block;
    content: "";
    width: 4px;
    height: 4px;
    background: #D0D6DD;
    position: absolute;
    top: 10px;
    left: -10px;
}

.contain-box .list .list-right img {
    width: 432px;
    height: 284px;
    margin-left: 35px;
}

.design-list {
    display: flex;
}

.design-item {
    width: 386px;
    height: 320px;
    background: #FFFFFF;
    box-shadow: 0px 6px 20px 0px rgba(52, 72, 102, 0.1), inset 0px 0px 100px 0px rgba(31, 123, 255, 0.07);
    border: 3px solid #FFFFFF;
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.design-item:hover {
    transform: translate(0, -20px);
    transition-duration: 0.6s;
}

.design-item:hover .design-item-title {
    color: #1F7BFF;
}

.design-item:nth-child(2n) {
    margin: 0 21px;
}

.design-item-title {
    width: 342px;
    height: 66px;
    font-size: 24px;
    font-family: PingFangSC-Semibold, PingFang SC;
    font-weight: 600;
    color: #222222;
    line-height: 66px;
    margin: 0 auto;
    border-bottom: 1px solid rgba(52, 72, 102, 0.2);
}

.design-item-cont {
    width: 342px;
    font-size: 14px;
    font-family: PingFang-SC-Regular, PingFang-SC;
    font-weight: 400;
    color: #222222;
    line-height: 22px;
    margin: 20px auto;
}

.design-item-label {
    width: 342px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 10px;
    margin-top: auto;
}

.design-item-label span {
    display: inline-block;
    width: auto;
    height: 22px;
    padding: 0 8px;
    background: #1F7BFF;
    border-radius: 2px;
    font-size: 12px;
    font-family: PingFangSC-Regular, PingFang SC;
    font-weight: 400;
    color: #FFFFFF;
    line-height: 22px;
    margin-right: 10px;
}