header {
    background: #111;
    width: 100%;
    height: 100px;
}

.page-wrap {
    padding: 2rem 0;
}

header .top-bar {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
}

header .container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

header .top-bar li a {
    padding: 0.25rem 1rem;
    color: #fff;
    text-decoration: none;
}

header .top-bar li {
    position: relative;
}

header .top-bar li a:hover {
    text-decoration: underline;
}

header .top-bar li:first-child a {
    padding-left: 0;
}

header .top-bar li:last-child a {
    padding-right: 0;
}

header .top-bar li .sub-menu {
    display: none;
    position: absolute;
    z-index: 999;
    top: 100%;
    left: 0;
    background: #fff;
    box-shadow: 1px 1px 10px rgba(0, 0, 0, 0.1);
    margin: 0;
    padding: 0;
    list-style-type: none;
    width: 200px;
    border-radius: .5rem;
}

header .top-bar li .sub-menu a {
    color: red;
    padding: .25rem;
    text-align: center;
    display: block;
    text-decoration: none;
}

header .top-bar li .sub-menu a:hover {
    color: black;
}

header .top-bar>.menu-item-has-children:hover>.sub-menu {
    display: block;
}

header .top-bar .menu-item-has-children .sub-menu>.menu-item-has-children:hover .sub-menu {
    display: block;
}

header .top-bar .sub-menu li .sub-menu {
    top: 0;
    left: 100%;
}