#menu {
    background-color: blue;

}

#menu>ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    width: 100%;
}

#menu > ul > li {
    flex: 1; 
    text-align: center;
}

#menu ul li {
    position: relative;
    border-right: 1px solid #fff;
}

#menu ul li:first-child {
    border-left: 1px solid #fff;
}

#menu ul li a {
    display: block;
    color: #fff;
    text-decoration: none;
    padding: 10px;
    font-size: 13px;
    white-space: nowrap;
}

#menu ul li a:hover {
    background-color: oldlace;
    color: black;
}

.menu-2 {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: blue;
    list-style-type: none;
    margin: 0;
    padding: 0;
    width: auto;
}

.menu-2 li {
    border: 1px solid white;
    width: auto;
}


.menu-2 li a:hover {
    background-color: oldlace;
    color: black;
}


.menu-2 .menu-2 {
    top: 0;
    left: 100%;
}

.menu-2 li {
    border: 1px solid white;
    width: 100%;
}

.menu-2 li a {
    text-align: left;
}

.menu-1:hover>.menu-2 {
    display: block;
}

.menu-2 li a:hover {
    background-color: oldlace;
    color: black;
}