menu-dropdown.css

/**
 * @file
 * Responsive menu styles
 */
.menu-dropdown {
  position: relative;
}

.js .menu-dropdown li,
.js .menu-dropdown a.has-submenu.highlighted {
  float: none;
  border-bottom: 1px solid #bbbbbb;
}

.js .menu-dropdown li.last {
  border-bottom: 0;
}
.js .menu-dropdown > li.last {
  padding-bottom: 1px;
}

.js .menu-dropdown ul li a {
  padding-left: 3em;
}

.js .menu-dropdown ul li li a {
  padding-left: 5em;
}

.js .menu-dropdown li.has-children > a {
  /* make room for the toggle button (sub indicator) */
  padding-right: 3.625rem;
}

.menu-dropdown a span.sub-arrow {
  position: absolute;
  top: 1rem;
  margin-top: -1.0625rem;
  left: auto;
  right: 0;
  width: 3.5rem;
  height: 3.5rem;
  overflow: hidden;
  border: 1px solid #bbbbbb;
  background: #333333;
  font: normal 1.384615rem/2.125rem monospace;
  text-align: center;
  text-shadow: none;
}

.menu-dropdown span.sub-arrow:before {
  display: block;
  content: '+';
  margin-top: 0.5625rem;
}

.menu-dropdown a.highlighted span.sub-arrow:before {
  display: block;
  content: '–';
}

@media (min-width: 34em) {
  .menu-dropdown a span.sub-arrow {
    width: 3.625rem;
    height: 3.625rem;
  }
}

@media (min-width: 48em) {
  /**
   * Switch to desktop layout
   * These transform the menu tree from
   * collapsible to desktop (navbar + dropdowns)
   */

  /* Begin section that shouldn't be edited */
  .js .menu-dropdown ul {
    position: absolute;
    width: 12rem;
    top: 1em;
    display: none;
  }

  .js .menu-dropdown li,
  .js .menu-dropdown a.has-submenu.highlighted {
    border-bottom: none;
  }

  .js .menu-dropdown ul li a,
  .js .menu-dropdown ul li li a{
    padding-left: 1.25rem;
  }

  .js .menu-dropdown > li {
    float: left;
  }

  [dir="rtl"] .menu-dropdown li {
    float: right;
  }

  .menu-dropdown ul li,
  [dir="rtl"] .menu-dropdown ul li {
    float: none;
  }

  .menu-dropdown a {
    white-space: nowrap;
  }

  .menu-dropdown ul a {
    white-space: normal;
  }
  /* END Rules that should not be edited */

  .js .menu-dropdown ul ul {
    border-left: 3px solid #20252e;
  }

  .js .menu-dropdown > li {
    border-bottom: 0;
  }
  .js .menu-dropdown > li.last {
    padding-bottom: 0;
  }

  .js .menu-dropdown li.has-children > a {
    padding-right: 1.75rem;
  }

  .menu-dropdown a span.sub-arrow {
    top: 50%;
    margin-top: -0.125rem;
    right: 0.75rem;
    width: 0;
    height: 0;
    border-width: 0.25rem;
    border-style: solid dashed dashed dashed;
    border-color: #ffffff transparent transparent transparent;
    background: transparent;
  }

  .menu-dropdown a.highlighted span.sub-arrow:before {
    display: none;
  }

  .menu-dropdown li {
    border-top: 0;
  }

  .menu-dropdown ul {
    padding: 0.3125rem 0;
  }

  .menu-dropdown ul .has-children > a {
    padding-right: 1.25rem;
  }

  .menu-dropdown ul a span.sub-arrow {
    right: 0.5rem;
    top: 50%;
    margin-top: -0.3125rem;
    border-width: 0.3125rem;
    border-style: dashed dashed dashed solid;
    border-color: transparent transparent transparent #ffffff;
  }

  .menu-dropdown span.scroll-up,
  .menu-dropdown span.scroll-down {
    position: absolute;
    display: none;
    visibility: hidden;
    overflow: hidden;
    height: 1.25rem;
  }

  .menu-dropdown span.scroll-up-arrow,
  .menu-dropdown span.scroll-down-arrow {
    position: absolute;
    top: 0;
    left: 50%;
    margin-left: -0.375rem;
    width: 0;
    height: 0;
    overflow: hidden;
    border-width: 0.375rem;
    border-style: dashed dashed solid dashed;
    border-color: transparent transparent #ffffff transparent;
  }

  .menu-dropdown span.scroll-down-arrow {
    top: 0.5rem;
    border-style: solid dashed dashed dashed;
    border-color: #ffffff transparent transparent transparent;
  }

  [dir="rtl"] .menu-dropdown li.has-children > a {
    padding-right: 0.75rem;
    padding-left: 1.5rem;
  }

  [dir="rtl"] .menu-dropdown span.sub-arrow {
    right: auto;
    left: 0.75rem;
  }

  [dir="rtl"] .menu-dropdown > li > ul:before {
    left: auto;
    right: 1.875rem;
  }

  [dir="rtl"] .menu-dropdown > li > ul:after {
    left: auto;
    right: 1.9375rem;
  }

  [dir="rtl"] .menu-dropdown li.has-children > a {
    padding: 0.625rem 1.25rem;
  }

  [dir="rtl"] .menu-dropdown span.sub-arrow {
    right: auto;
    left: 0.5rem;
    border-style: dashed solid dashed dashed;
    border-color: transparent #ffffff transparent transparent;
  }

}