#header{
    width: 100%;
    height: 100px;
    padding: 0 5%;
    box-sizing: border-box;
    position: fixed;
    background-color: transparent;
    z-index: 999;
    top: 0;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background-color, .5s;
}

#header.scroll{
    background-color: #fff;
}

#header.scroll ul.menu>li a{
    color: #111;
    font: normal 500 20px 'Montserrat', sans-serif;
} 

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

ul.menu{
    height: 100%;
    display: flex;
}

ul.menu>li{
    height: 100%;
    margin-right: 70px;
    position: relative;
}

ul.menu>li:last-child{
    margin-right: 0;
}

ul.menu>li a{
    display: flex;
    align-items: center;
    height: 100%;
    color: #fff;
    font: normal 500 20px 'Montserrat', sans-serif;
}

ul.sub_menu{
    width: 210px;
    position: absolute;
    top: 100px;
    left: 50%;
    transform: translateX(-50%);
    box-sizing: border-box;
    background-color: #fff;
    padding: 20px 0;
    text-align: center;
    box-shadow: 5px 5px 15px rgb(0, 0, 0, 0.1);
    display: none;
}

ul.sub_menu li{
    width: 100%;
    height: 40px;
    color: #111;
    font: normal 18px 'Pretendard-Light', sans-serif;
    line-height: 40px;
    cursor: pointer;
}

ul.sub_menu li:hover{
    color: #008197;
    font-family: 'Pretendard-Regular', sans-serif;
}

ul.download{
    height: 100%;
    display: flex;
}

ul.download li{
    height: 100%;
    margin-right: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
}

ul.download li img{
    box-shadow: 3px 3px 10px rgb(0, 0, 0, 0.1);
}