.dropdown-item {
    color: white;
  }
  .dropdown .dropdown-menu {
    display: none;
    background: #212529;
  }
  .dropdown:hover>.dropdown-menu, 
  .dropend:hover>.dropdown-menu {
    display: block;
    margin-top: .1em;
    margin-left: .1em;
    background-color: #0d6efd;
  }
  .container {
    width: 100%;
    margin: 0 auto;
    padding: 10px;
    text-align: center;
  }
  
  @media screen and (min-width:769px) {
    .dropend:hover>.dropdown-menu {
        background-color: #0d6efd;
      position: absolute;
      top: 0;
      left: 100%;
    }
    .dropend .dropdown-toggle {

      margin-left: .5em;
    }
  }