nav {
    display: block;
    text-align: center;
}

    nav ul {
        margin: 0;
        padding: 0;
        list-style: none;
    }

.nav a {
    display: block;
    background: #111;
    color: #fff;
    text-decoration: none;
    padding: 0.8em 1.8em;
    text-transform: uppercase;
    font-size: 80%;
    letter-spacing: 2px;
    text-shadow: 0 -1px 0 #000;
    position: relative;
}

.nav {
    vertical-align: top;
    display: inline-block;
    box-shadow: 1px -1px -1px 1px #000, -1px 1px -1px 1px #fff, 0 0 6px 3px #fff;
    border-radius: 6px;
}

    .nav li {
        position: relative;
    }

    .nav > li {
        float: left;
        border-bottom: 4px #aaa solid;
        margin-right: 1px;
    }

        .nav > li > a {
            margin-bottom: 1px;
            box-shadow: inset 0 2em .33em -0.5em #555;
        }

        .nav > li:hover,
        .nav > li:hover > a {
            border-bottom-color: orange;
        }

    .nav li:hover > a {
        color: orange;
    }

    .nav > li:first-child {
        border-radius: 4px 0 0 4px;
    }

        .nav > li:first-child > a {
            border-radius: 4px 0 0 0;
        }

    .nav > li:last-child {
        border-radius: 0 0 4px 0;
        margin-right: 0;
    }

        .nav > li:last-child > a {
            border-radius: 0 4px 0 0;
        }

    .nav li li a {
        margin-top: 1px;
    }

    .nav li a:first-child:nth-last-child(2):before {
        content: "";
        position: absolute;
        height: 0;
        width: 0;
        border: 5px solid transparent;
        top: 50%;
        right: 5px;
    }

    /* submenu positioning*/
    .nav ul {
        position: absolute;
        white-space: nowrap;
        border-bottom: 5px solid orange;
        z-index: 1;
        left: -99999em;
    }

    .nav > li:hover > ul {
        left: auto;
        margin-top: 5px;
        min-width: 100%;
    }

    .nav > li li:hover > ul {
        left: 100%;
        margin-left: 1px;
        top: -1px;
    }
    /* arrow hover styling */
    .nav > li > a:first-child:nth-last-child(2):before {
        border-top-color: #aaa;
    }

    .nav > li:hover > a:first-child:nth-last-child(2):before {
        border: 5px solid transparent;
        border-bottom-color: orange;
        margin-top: -5px
    }

    .nav li li > a:first-child:nth-last-child(2):before {
        border-left-color: #aaa;
        margin-top: -5px
    }

    .nav li li:hover > a:first-child:nth-last-child(2):before {
        border: 5px solid transparent;
        border-right-color: orange;
        right: 10px;
    }