.menu {
    list-style: none;
}
.menu li {
    position: relative;
}
.menu span{
    position: relative;
}
.menu em {
    background: url(../img/hover.png) no-repeat;
    width: 180px;
    height: 45px;
    position: absolute;
    top: -85px;
    left: -15px;
    text-align: center;
    padding: 20px 12px 10px;
    font-style: normal;
    z-index: 2;
    display: none;
}