IPython/html/static/notebook/less/menubar.less

#menubar {
}

#menubar .navbar-inner {
  min-height: 28px;
  border-top: 1px;
  border-radius: 0px 0px @border-radius-base @border-radius-base;
}

#menubar .navbar {
  margin-bottom: 8px;
}

.nav-wrapper {
  border-bottom: 1px solid @navbar-default-border;
}

#menubar li.dropdown {
  line-height: 12px;
}

i.menu-icon {
  // add padding to account for float-right
  padding-top: 4px;
}

ul#help_menu li a{
    overflow: hidden;
    padding-right: 2.2em;
    i {
        margin-right: -1.2em;
    }
}

ul#menus {
  float: left;
}

// http://www.bootply.com/86684
.dropdown-submenu{position:relative;}
.dropdown-submenu>.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 6px;border-radius:0 6px 6px 6px;}
.dropdown-submenu:hover>.dropdown-menu{display:block;}
.dropdown-submenu>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:#cccccc;margin-top:5px;margin-right:-10px;}
.dropdown-submenu:hover>a:after{border-left-color:#ffffff;}
.dropdown-submenu.pull-left{float:none;}.dropdown-submenu.pull-left>.dropdown-menu{left:-100%;margin-left:10px;-webkit-border-radius:6px 0 6px 6px;-moz-border-radius:6px 0 6px 6px;border-radius:6px 0 6px 6px;}