ruler.css

.rul_cornerTL,
.rul_cornerTR {
	border-bottom: 1px solid rgba(206, 219, 236, .5)
}
.rul_cornerBL,
.rul_cornerTL {
	border-right: 1px solid rgba(206, 219, 236, .5)
}

.rul_cornerBL,
.rul_cornerBR {
	bottom: 1px;
	border-top: 1px solid rgba(206, 219, 236, .5)
}
.rul_cornerBR,
.rul_cornerTR {
	right: 1px;
	border-left: 1px solid rgba(206, 219, 236, .5)
}

/*	changed CSS to "top: 0;" */


.rul_wrapper {
	position: absolute;
	top: 0;
	height: 100%;
	width: 100%;
	overflow: hidden;
	pointer-events: none
}
.rul_corner,
.rul_line,
.rul_ruler {
	pointer-events: all;
	position: absolute
}
.rul_wrapper * {
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	-o-user-select: none;
	user-select: none
}
.rul_ruler {
	display: block;
	border: 1px solid rgba(206, 219, 236, .5);
	filter: blur(0);
	-webkit-filter: blur(0);
	z-index: 1000
}

/*	changed some CSS for a nice X in the corner */

.rul_corner {
/*	background-color: #fff;*/
	background: #7E858E;
    width: 26px;
    height: 25px;
    position: relative;
	z-index: 1001;
	cursor: pointer
}

.rul_corner:hover {
	background-color: #d3d3d3
}

.rul_corner:after {
    content: '';
    height: 12px;
    border-left: 2px solid #fff;
    position: absolute;
    transform: rotate(45deg);
    left: 12px;
	top: 6px;
}

.rul_corner:before {
    content: '';
    height: 12px;
    border-left: 2px solid #fff;
    position: absolute;
    transform: rotate(-45deg);
    left: 12px;
	top: 6px;
}

.rul_cornerTL {
	top: 0;
	left: 0
}
.rul_cornerTR {
	top: 1px
}
.rul_cornerBL {
	left: 1px
}
.rul_ruler_Vertical {
	cursor: ew-resize;
	border-left: none
}
.rul_ruler_Horizontal {
	cursor: ns-resize;
	border-top: none
}
.rul_line {
	color: transparent;
	background-color: transparent;
	border-bottom: 1px solid #3BB7C7;
	border-left: 1px solid #3BB7C7;
	z-index: 1000
}
.rul_line_dragged {
	border: 1px dotted #6B7587
}
.rul_line:hover {
	border-bottom: 1px solid #236E77;
	border-left: 1px solid #236E77
}
.rul_lineVer {
	top: 0;
	bottom: 0
}
.rul_lineVer:hover {
	cursor: ew-resize
}
.rul_lineHor {
	right: 0;
	left: 0
}
.rul_lineHor:hover {
	cursor: ns-resize
}
.rul_tooltip:after {
	background: #fff;
	color: #000;
	border: 1px solid gray;
	font-size: 10px;
	content: attr(data-tip);
	top: 50%;
	left: 50%;
	margin-top: 1px;
	margin-left: 1px;
	padding: 2px 5px;
	position: absolute;
	z-index: 10001;
	min-width: 45px
}

/*	changed CSS to "top: 0;" */

.rul_tracker {
	height: 1px;
	width: 1px;
	background: #000;
	position: absolute;
	top: 0;
	pointer-events: none
}