#header{
    width: 100%;
    height: 90px;
    position: fixed;
    top: 0;
    left: 0;
    padding: 0 5%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 10000;
    transition-duration: .5s;
}

#header.scroll_on{
    /* background-color: rgba(255, 252, 255, 0.5); */
    /* backdrop-filter: blur(8px); */
    background-color: #fff;
    border-bottom: 1px solid rgba(204, 204, 204, 0.5);
}

#header>a{
    width: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#header>a img{
    width: 100%;
}

#header ul{
    display: flex;
}

#header ul li{
    margin-right: 60px;
}

#header ul li:last-child{
    margin-right: 0;
}

#header ul li a{
    /* font-size: 24px; */
    font-size: 16px;
    font-weight: 500;
    padding: 7px 0;
    color: #333;
    display: block;
    position: relative;
}

#header ul li:hover a{
    color: #6667ab;
}

#header ul li a span{
    position: absolute;
    left: 50%;
    width: 0%;
    height: 1px;
    bottom: 0px;
    display: block;
    position: absolute;
    transition: all 0.3s ease-out;
    background-color: #6667ab;
}

#header ul li:hover a span{
    width: 100%;
    left: 0;
}