panda_web/assets/style/header1/index.css

.header1-page {
    width: 100%;
    height: 62px;
    padding: 0 30px;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
}
.header1-page.bg{
    background: #0000004d;
}

.header1-page .logo-img {
    width: 150px;
    height: 42px;
    margin-top: 19px;
}

.header1-page .menu {
    width: 393px;
    display: flex;
    justify-content: space-between;
    font-size: 18px;
    font-family: Gilroy, Gilroy-Bold;
    font-weight: 700;
    text-align: left;
    color: #ffffff;
    margin-top: 29px;
}

.header1-page .menu .item {
    height: 18px;
    position: relative;
    cursor: pointer;
}

.header1-page .menu .item:hover::after {
    width: 100%;
}
.header1-page .menu .item::after{
    transition: width 0.3s;
    transition-delay: 0.3s;/*避免短时间内，如果重复触发会导致闪烁闪烁*/
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: -17px;
    height: 4px;
    width: 0;
    background: #008cff;
}
.header1-page .menu .item:hover .expand2{
    width: 608px;
    padding: 55px 60px;
}
.header1-page .menu .item .expand2{
    overflow: hidden;
    transition: all 0.3s;
    transition-delay: 0.3s;
    width: 0;
    height: 261px;
    background: #ffffff;
    border-radius: 20px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 35px;
    box-sizing: border-box;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    flex-wrap: wrap;
    padding: 0;
}
.header1-page .menu .item .expand2-box{
    width: 50%;
    font-family: Gilroy, Gilroy-Medium;
    line-height: 36px;
}
.header1-page .menu .item .expand2-box-title{
    font-size: 18px;
    font-weight: 700;
    color: #333333;
}
.header1-page .menu .item .expand2-box-content{
    font-size: 14px;
    font-weight: 500;
    color: #999999;
}

.header1-page .lang-box {
    margin-top: 29px;
}

.header1-page .lang-box .lang1 {
    width: 31px;
    height: 22px;
    margin-right: 32px;
    vertical-align: middle;
}

.header1-page .lang-box .lang2 {
    width: 18px;
    height: 14px;
    vertical-align: middle;
}