.sidebar-nav .submenu {
  display: none;
  list-style: none;
  padding-left: 20px;
}

.sidebar-nav .submenu li a {
  display: block;
  padding: 10px;
  text-decoration: none;
  color: #333;
}

.sidebar-nav .submenu li a:hover {
  background-color: #f0f0f0;
}

.mr-4{
  margin-right: 1.5rem!important;
}