GSYH/WebRoot/static/ace/css/less/sidebar/sub-arrow.less

//the arrow connecting "LI" to ".SUBMENU"
//-li > .arrow
.nav-list li {
 > .arrow {
	display: none;

	position: absolute;
	top: 8px;
	right: 1px;
	
	z-index: @zindex-submenu + 1;

	&:before, &:after {
		border: 1px solid transparent;
		display: block;
		height: 0;
		width: 0;

		position: absolute;
		left: -20px;
		top: 0;
		right: auto;
		bottom: auto;

		content: "";
		
		border-width: 10px;
	}
	
	&:before {
		z-index: 1;//above .submenu
		left: -21px;
	}
	&:after {
		z-index: 2;//above .arrow:before
	}
 }

 //don't display when there's no submenu
 &:hover > a + .arrow , &.hover-show > a + .arrow {
	display: none;
 }
 
 @media only screen and (min-width: @screen-hover-menu) {
  &.hover:hover > a.dropdown-toggle + .arrow,
  &.hover.hover-show > a.dropdown-toggle + .arrow
  {
	display: block;
  }
 }
}