.dropdown-submenu {
  position: relative;
  >.dropdown-menu {
    top: 0;
    left: 100%;
    margin-top: -6px;
    margin-left: -1px;
    -webkit-border-radius: 0 6px 6px 6px;
    -moz-border-radius: 0 6px 6px;
    border-radius: 0 6px 6px 6px;
  }
  >a:after {
    display: block;
    content: " ";
    float: right;
    width: 0;
    height: 0;
    border-color: transparent;
    border-style: solid;
    border-width: 5px 0 5px 5px;
    border-left-color: #CCC;
    margin-top: 5px;
    margin-right: -10px;
  }
}

.flip-left {
  left: -109% !important;
  width: 110%;
}
.pull-right {
  >.dropdown-submenu {
    >a:after{
      float: left;
      border-color: transparent;
      border-style: solid;
      border-width: 5px 5px 5px 5px;
      border-right-color: #CCC;
      margin-top: 5px;
      margin-right: 10px;
    }
  }
}

.dropdown-submenu:hover {
  >.dropdown-menu { display: block; }
  >a { border-color: #FFF; }
}

.dropdown-submenu.gcode,
.dropdown-submenu.setting { >.dropdown-menu { overflow: scroll; height: 45em; } }
.dropdown-submenu.setting>.dropdown-menu { max-height: 40em; }