/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Menu chính */
.menu {
    list-style: none;
    display: flex;
    background: blue;
}

/* Item menu */
.menu > li {
    position: relative;
}

/* Link */
.menu li a {
    display: block;
    padding: 15px 25px;
    color: white;
    text-decoration: none;
    border-right: 1px solid white;
}

/* Hover menu */
.menu li a:hover {
    background: oldlace;
    color: black;
}

/* Submenu (menu con) */
.submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: blue;
    list-style: none;
    min-width: 200px;
}

/* Hiện submenu khi hover */
.dropdown:hover .submenu {
    display: block;
}

/* Item submenu */
.submenu li a {
    border-bottom: 1px solid white;
}

/* Item đang chọn (màu giống hình) */
.submenu .active a {
    background: oldlace;
    color: black;
}