menu.css

 /* Reset */
.menu,
.menu ul,
.menu li,
.menu a {
    margin: 0 auto;
    padding: 0 auto;
    border: none;
    outline: none;
    font-family: Arial,Helvetica,sans-serif;
    font-size: 13px;
    line-height: 150%;
}

/* Menu */
.menu {

    z-index: 2000;

    height: 40px;

    max-width: 100%;

    margin: 0 auto;

    background: #4c4e5a;
    background: -webkit-linear-gradient(top, #4c4e5a 0%,#2c2d33 100%);
    background: -moz-linear-gradient(top, #4c4e5a 0%,#2c2d33 100%);
    background: -o-linear-gradient(top, #4c4e5a 0%,#2c2d33 100%);
    background: -ms-linear-gradient(top, #4c4e5a 0%,#2c2d33 100%);
    background: linear-gradient(top, #4c4e5a 0%,#2c2d33 100%);

    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 0px 0px 10px 10px;
}

.menu li {
    position: relative;
    display: table-cell;
    list-style: none;
    float: left;
    display: block;
    height: 40px;
}

/* Links */

.menu li a {
    display: block;
    padding: 0 62px;
    margin: 6px 0;
    line-height: 28px;
    text-decoration: none;

    /*border-left: 1px solid rgb(238,238,238);

    border-right: 1px solid #4f5058;*/

    font-family: Helvetica, Arial, sans-serif;
    font-weight: bold;
    font-size: 13px;

    color: #f3f3f3;
    /*text-shadow: 1px 1px 1px rgba(0,0,0,.6);*/

    -webkit-transition: color .2s ease-in-out;
    -moz-transition: color .2s ease-in-out;
    -o-transition: color .2s ease-in-out;
    -ms-transition: color .2s ease-in-out;
    transition: color .2s ease-in-out;
}

.menu li:first-child a { border-left: none; }
.menu li:last-child a{ border-right: none; }

.menu li:hover > a { color: #c3c3c3; }

/* Sub Menu */

.menu ul {
    position: absolute;
    top: 40px;
    left: 0;

    opacity: 0;

    z-index: 1000;

    background: #1f2024;

    -webkit-border-radius: 0 0 5px 5px;
    -moz-border-radius: 0 0 5px 5px;
    border-radius: 5px 5px 5px 5px;

    -webkit-transition: opacity .25s ease .1s;
    -moz-transition: opacity .25s ease .1s;
    -o-transition: opacity .25s ease .1s;
    -ms-transition: opacity .25s ease .1s;
    transition: opacity .25s ease .1s;
}

.menu li:hover > ul { opacity: 1; }

.menu ul li {
    height: 0;
    overflow: hidden;
    padding: 0;

    -webkit-transition: height .25s ease .1s;
    -moz-transition: height .25s ease .1s;
    -o-transition: height .25s ease .1s;
    -ms-transition: height .25s ease .1s;
    transition: height .25s ease .1s;
}

.menu li:hover > ul li {
    height: 36px;
    overflow: visible;
    padding: 0;
}

.menu ul li a {
    width: 170px;
    padding: 4px 0 4px 15px;
    margin: 0;

    border: none;
    border-bottom: 1px solid #353539;
}

.menu ul li:last-child a { border: none; }