a {
    text-decoration: none;
    color: #000;
}

.header {
    position: fixed;
    width: 100%;
    padding: 0px 20rem;
    display: flex;
    justify-content: space-between;
    top: 0;
    box-sizing: border-box;
    align-items: center;
    background-color: #fff;
    z-index: 99;
}

.header .icon,
.header .right {
    display: none;
}

.header .icon,
.header .icon-open {
    position: relative;
}

.header .icon::after {
    position: absolute;
    content: '';
    width: 25px;
    height: 0px;
    padding: 7px 0px;
    border-top: 3px solid #000;
    border-bottom: 3px solid #000;
    top: 38%;
    left: 20%;
    transition: all 1s;
}

.header .icon span {
    position: absolute;
    display: block;
    background-color: #000;
    width: 25px;
    height: 3px;
    left: 20%;
    z-index: 9;
    top: 48%;
    transition: all 1s;
}

.header .icon-open::after {
    content: '';
    position: absolute;
    width: 30px;
    border-bottom: 3px solid #000;
    bottom: 35%;
    left: 25%;
    transform: rotate(-45deg);
    transform-origin: left;
    transition: all 1s;
}

.header .icon-open::before {
    content: '';
    position: absolute;
    width: 30px;
    border-bottom: 3px solid #000;
    top: 35%;
    left: 25%;
    transform: rotate(45deg);
    transform-origin: left;
    transition: all 1s;
}

.header .menu {
    width: 63%;
    display: flex;
    justify-content: space-between;
    cursor: pointer;
    display: flex;
    align-items: center;
}

.header .menu .item {
    height: 100px;
    flex: 1;
    font-size: 18px;
    font-weight: 500;
    line-height: 100px;
    text-align: center;
    border-bottom: 2px solid rgba(255, 255, 255, 0);
    position: relative;
    box-sizing: border-box;

}

.header .menu .item:hover {
    color: #df1c28;
    border-bottom: 2px solid #df1c28;
    z-index: 3;
    box-sizing: border-box;
}

.about-menu {
    position: absolute;
    left: -35px;
    top: 100px;
    width: 555px;
    display: none;
    padding: 35px 40px;
    box-sizing: border-box;
    background-color: #FFF;
}

.header .menu .item:nth-child(6) .about-menu {
    left: -85px;
}

.header .menu .item:nth-child(7) .about-menu {
    left: -160px;
}

.about-menu-box {
    width: 100%;
    height: 100%;
    display: flex;
}

.about-menu-item {
    margin-right: 30px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.about-menu-item .menu-item {
    min-width: 80px;
    height: 80px;
    line-height: 80px;
    justify-content: space-between;
    color: #000;
    text-align: center;
}

.about-menu-item .menu-item:hover {
    color: #df1c28;
}

.about-menu-img {
    flex: 1;
    height: 100%;
}

.about-menu-img img {
    width: 100%;
    height: 100%;
}

.header .menu .item:nth-child(2) {
    position: inherit;
}

.header .menu .item:nth-child(2) .about-menu {
    /* display: block; */
    background-color: #FFF;
    width: 100%;
    left: 0;
}

.header .menu .item:nth-child(2) .about-menu .about-menu-box .about-menu-item {
    justify-content: center;
    flex-direction: unset;
    width: 100%;
}

.header .menu .item:nth-child(2) .about-menu .about-menu-box .about-menu-item .menu-item span {
    line-height: normal;
    height: auto;
}

.menu-item {
    padding: 0 20px 0px 0px;
    display: flex;
    flex-direction: column;
    line-height: 60px;
    font-size: 15px;
}

.menu-item .box {
    height: 48px;
}

.menu-item span {
    height: 60px;
    color: #000;
}

.menu-item span:hover {
    color: #df1c28;
}

.menu-item .img {
    width: auto;
    max-height: 48px;
    max-width: 120px;
}

@media screen and (max-width:1340px) {
    .header {
        padding: 0px 10rem;
    }

    .header .menu {
        width: 70%;
    }
}

@media screen and (max-width:1200px) {
    .header {
        padding: 0rem;
    }

    .header .menu {
        width: 80%;
    }
}

@media screen and (max-width:750px) {
    .header {
        padding: 0rem;
        max-height: 7rem;
        justify-content: space-between;
        background-color: #FFF;
    }

    .header .logo {
        width: 26.6%;
    }
    .header .logo a{
        width: 100%;
        display: inline-block;
    }
    .header .logo a img{
        width: 100%;
    }

    .header .menu {
        position: fixed;
        top: 70px;
        width: 100vw;
        height: 100%;
        flex-direction: column;
        justify-content: left;
        align-items: baseline;
        background-color: rgba(0, 0, 0, 0.8);
        color: #FFF;
        padding: 2rem;
        box-sizing: border-box;
        display: none;
    }

    .header .icon,
    .header .icon-open,
    .header .right {
        display: block;
        width: 8rem;
        height: 8rem;
        font-size: 30px;
        font-weight: 600;
        text-align: center;
        line-height: 8rem;
    }

    .header .menu .item {
        width: 100%;
        line-height: normal;
        height: auto !important;
        flex: none;
        height: 4rem;
        /* line-height: 4rem; */
        border: none;
        display: flex;
        flex-direction: column;
    }

    .header .menu .item .item-box {
        display: flex;
        justify-content: space-between;
    }


    .header .menu .item .item-box text {
        display: inline-block;
        width: 80%;
        text-align: left;
        position: relative;
        height: 38px;
        line-height: 30px;
    }

    .header .menu .item .item-box text a {
        font-size: 15px;
        color: #FFF;
        width: 100%;
        display: inline-block;
    }

    .header .menu .item .item-box span {
        width: 20%;
        position: relative;
    }

    .header .menu .item .icon-add::after {
        content: '';
        width: 16px;
        border-bottom: 3px solid #ccc;
        position: absolute;
        right: 0px;
        top: 50%;
        transition: all 0.5s;
    }

    .header .menu .item .icon-add::before {
        content: '';
        height: 16px;
        border-left: 3px solid #ccc;
        position: absolute;
        right: 6px;
        top: 33%;
        transition: all 0.5s;
    }

    .header .menu .item .icon-subtract::after {
        content: '';
        width: 16px;
        border-bottom: 3px solid #ccc;
        position: absolute;
        right: 0px;
        top: 50%;
        transform: rotate(45deg);
        transition: all 0.5s;
        display: none;
    }

    .header .menu .item .icon-subtract::before {
        content: '';
        height: 16px;
        border-left: 3px solid #ccc;
        position: absolute;
        right: 6px;
        top: 20%;
        transform: rotate(90deg);
        transition: all 0.5s;
    }


    .header .menu .item:nth-child(2) {
        position: relative;
    }

    .header .menu .item .about-menu {
        background-color: rgba(0, 0, 0, 0);
        /* display: block; */
        position: inherit;
    }

    .menu-item .box {
        display: none;
    }

    .menu-item {
        line-height: normal;
    }

    .menu-item span {
        color: #FFF;
        height: auto;
    }

    .about-menu {
        /* display: block; */
        position: inherit;
        top: 0;
        left: 0;
        padding: 0;
        width: 100%;
        background-color: rgba(0, 0, 0, 0);
    }

    .about-menu-item {
        width: 100%;
        margin: 0;
    }

    .about-menu .about-menu-box .about-menu-img {
        display: none;
    }

    .header .menu .item:nth-child(2) .about-menu {
        background-color: rgba(255, 255, 255, 0);
    }

    .header .menu .item .about-menu {
        left: 0 !important;
    }

    .about-menu-item .menu-item {
        text-align: left;
        line-height: 40px;
        font-size: 15px;
        color: #FFF;
        padding: 0 32px;
        flex: 1;
    }

    .about-menu-item .menu-item a {
        color: #fff;
    }

    .header .menu .item:hover {
        border: none;
    }

    .header .menu .item:nth-child(2) .about-menu .about-menu-box .about-menu-item {
        flex-direction: column;
    }

    .header .menu .item:nth-child(2) .about-menu .about-menu-box .about-menu-item .menu-item span {
        width: auto;
        line-height: 40px;
    }

    /* .header .menu .item:hover .about-menu {
        display: inherit;
    } */
}