.dropdown-menu .sub-menu {
  left: 100%;
  position: absolute;
  top: 0;
  visibility: hidden;
  margin-top: -1px;
}

.navbar-toggler .navbar-toggler {
    border-color: #1a7da7;
}
.navbar-toggler .navbar-toggler-icon {
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 32 32' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(26, 125, 167, 0.99)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 8h24M4 16h24M4 24h24'/%3E%3C/svg%3E");
}

.dropdown-menu li:hover .sub-menu {
  visibility: visible;
}

.dropdown:hover .dropdown-menu {
  display: block;
}

.nav-tabs .dropdown-menu,
.nav-pills .dropdown-menu,
.navbar .dropdown-menu {
  margin-top: 0;
}

.navbar .sub-menu:before {
  border-bottom: 7px solid transparent;
  border-left: none;
  border-right: 7px solid rgba(0, 0, 0, 0.2);
  border-top: 7px solid transparent;
  left: -7px;
  top: 10px;
}

.navbar .sub-menu:after {
  border-top: 6px solid transparent;
  border-left: none;
  border-right: 6px solid #fff;
  border-bottom: 6px solid transparent;
  left: 10px;
  top: 11px;
  left: -6px;
}
.dropdown-header{
    margin: 0;
    padding: 0;
}
.sub-menu{
    background-color: rgba(250, 250, 250, 0.8);
    border:none;
}