span[class^="20"] {
    left: -40px;
    top: -10px;
    z-index: 800;
    font-weight: bold;
    border: 2px dashed black;
    padding: 0 10px 0 10px;
    position: absolute;
    color: black;
    font-size: 16px;
    -webkit-transform: rotate(-25deg);
    -moz-transform: rotate(-25deg);
    -o-transform: rotate(-25deg);
    transform: rotate(-25deg);
}

span[class^="20"]:before {
{
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
	right: -2px;
	top: 0px;
	border-color: transparent #fff transparent transparent;
}