tootip-arrows.css

/* create an arrow that points up */
div.arrow-up {
	width: 0; 
	height: 0; 
	border-left: 5px solid transparent;  /* left arrow slant */
	border-right: 5px solid transparent; /* right arrow slant */
	border-bottom: 5px solid #2f2f2f; /* bottom, add background color here */
	font-size: 0;
	line-height: 0;
}

/* create an arrow that points down */
div.arrow-down {
	width: 0; 
	height: 0; 
	border-left: 5px solid transparent;
	border-right: 5px solid transparent;
	border-top: 5px solid #2f2f2f;
	font-size: 0;
	line-height: 0;
}

/* create an arrow that points left */
div.arrow-left {
	width: 0; 
	height: 0; 
	border-bottom: 5px solid transparent;  /* left arrow slant */
	border-top: 5px solid transparent; /* right arrow slant */
	border-right: 5px solid #2f2f2f; /* bottom, add background color here */
	font-size: 0;
	line-height: 0;
}

/* create an arrow that points right */
div.arrow-right {
	width: 0; 
	height: 0; 
	border-bottom: 5px solid transparent;  /* left arrow slant */
	border-top: 5px solid transparent; /* right arrow slant */
	border-left: 5px solid #2f2f2f; /* bottom, add background color here */
	font-size: 0;
	line-height: 0;
}