body {
    margin: 0;
    font-family: 'tahoma'
}

nav {
    margin: 0 auto;
    width: 100%;
    height: auto;
    background-size: 100% 100%;
    background-repeat: no-repeat;
    display: inline-block;
    background: grey;
    color: black;
    font-size: 14px;
    font-weight: bold;
    font-family: 'tahoma';
}

    nav ul {
        margin: 0;
        padding: 0;
        list-style-type: none;
        float: left;
        display: inline-block;
        height: 180px;
    }

    nav ul li {
        position: relative;
        margin: 0 10px 0 0;
        float: left;
        display: inline-block;
    }

li > a:after {
    content: "\25bc";
}
/* Change this in order to change the Dropdown symbol */

li > a:only-child:after {
    content: '';
}

nav ul li a {
    padding: 20px;
    display: inline-block;
    color: black;
    text-decoration: none;
    word-spacing: 1px;
    height: auto;
}

    nav ul li a:hover {
        opacity: 0.5;
        color: white;
    }

nav ul li ul {
    display: none;
    position: absolute;
    left: 0;
    background: grey;
    float: left;
    height: auto;
}

    nav ul li ul li {
        width: 100%;
        border-bottom: 1px solid rgba(255,255,255,.3);
        word-spacing: 1px;
        font-weight:normal;
    }

nav ul li:hover ul {
    display: block;
    font: white;
    background-size: auto;
}