body {
  font-family: Helvetica, Arial, sans-serif;
  margin: 0;
  padding: 0;
}

* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

.navigation-menu--is-mobile li {
  border-top: 1px solid #ddd;
  background: #eee;
}

.navigation-menu--is-desktop li a,
.navigation-menu--is-mobile li a {
  padding: .5em 1em;
  text-decoration: none;
}

.navigation-menu--is-mobile li li {
  border-top: 1px solid #ccc;
  background: #ddd;
}

.navigation-menu--is-mobile li li li {
  border-top: 1px solid #bbb;
  background: #ccc;
}

.navigation-menu--is-mobile li li li li {
  border-top: 1px solid #aaa;
  background: #bbb;
}

.navigation-menu--is-mobile .has-child-menu span { padding: .5em 1em; }

.navigation-menu--is-desktop {
  border-bottom: 1px solid #ccc;
  border-top: 1px solid #ccc;
}

.navigation-menu--is-desktop,
.navigation-menu--is-desktop ul { background: #eee; }

.navigation-menu--is-desktop ul ul { background: #ccc; }

.navigation-menu--is-desktop ul li:hover { background: #ccc; }

.navigation-menu--is-desktop ul ul li:hover { background: #bbb; }

.navigation-menu__mobile-toggle { margin: .75em 1em; }