nav .navbar-nav .nav-item.dropdown .dropdown-menu{
    bacakground-color:#008641;
}
nav .navbar-nav .nav-item.dropdown .dropdown-menu li {
    position: relative;
}
nav .navbar-nav .nav-item.dropdown .dropdown-menu li:hover > .dropdown-menu {
    display: block;
    position: absolute;
    left: 99%;
    top: -1px;
}
nav .navbar-nav .nav-item.dropdown:hover > .dropdown-menu {
    display: block;
}
.dropdown-menu {
    top: 100%;
    left: 0;
    z-index: 1000;
    min-width: 10rem;
    padding: 0 0;
    margin: 0 0 0;
    font-size: 1rem;
    color: #212529;
    text-align: left;
    list-style: none;
    background-color: #fff;
    background-clip: padding-box;
    border: .1px solid rgba(0,0,0,.15);
    border-radius: .25rem;

}