nav#myNavmenu {
    background: #3C3838;
}

nav.sm-menu {
    margin: 0px !important;
}

nav.sm-level, .sm-level {
    -webkit-box-shadow: 0 0 0 0 rgba(0, 0, 0, 0) !important;
    -moz-box-shadow: 0 0 0 0 rgba(0, 0, 0, 0) !important;
    box-shadow: 0 0 0 0 rgba(0, 0, 0, 0) !important;
}