.dropdown {
  position: relative;
}

.submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: auto;
  z-index: 999;
  background-color: white;
  list-style: none;
  padding: 0;
  margin: 0;
  min-width: 200px;
  border: 1px solid #333;
}
.submenu a {
  color: gray;
  padding: 0.5rem 1rem;
  display: block;
  text-decoration: none;
}

.submenu a:hover {
  background-color: light-gray;
  color: black;
}

.dropdown:hover .submenu {
  display: block;
}

.submenu li {
  black-space: nowrap;
}

.submenu-group {
  position: relative;
}

.submenu-label {
  color: gray;
  display: block;
  font-weight: 700;
  padding: 0.6rem 1rem 0.3rem;
  text-decoration: none;
}

.submenu-nested {
  border: 0;
  display: block;
  margin: 0.15rem 0 0.5rem 0.75rem;
  min-width: 0;
  position: static;
  border-left: 2px solid #e5e5e5;
  padding-left: 0.25rem;
}

.submenu-nested a {
  padding-left: 1.1rem;
}
/* On large screens, switch to right-aligned submenu */
@media screen and (min-width: 60em) {
  .submenu {
    right: 0;
    left: auto;
  }
}