@phoenix-plugin-registry/swmitra.html-designer/css/ruler.css

NOW WITH RESPONSIVE DESIGN TOOLS (BETA)! Design and customize web ui with HTML and CSS. Now with taggable Design snippet/bookmark support.

.ruler {
	background: #3c3f41;
	color:gray;
	font-size: 12px;
    font-family: SourceSansPro, Helvetica, Arial, 'Meiryo UI', 'ＭＳ Ｐゴシック', 'MS PGothic', sans-serif;
	line-height: 14px;
	overflow: hidden;
}

.ruler > div {
	background: gray;
    color:lightgray;
}

.hRule {
    position:absolute;
	height: 18px;
	left: 0px;
	top: 0px;
	border-top:1px solid gray;
	border-bottom: 1px solid;
	z-index: 9;
}
.vRule {
	position: absolute;
	width: 18px;
	left: 0px;
	top: 0px;
	border-right: 1px solid;
	z-index: 9;
    border-left:1px solid gray;
}
.corner {
	position: absolute;
	top: 0px;
	left: 0px;
	width: 22px;
	height: 22px;
	border: 1px solid gray;
	z-index: 100;
    overflow: visible;
    cursor: context-menu;
}
.hRule .tickLabel {
	position: absolute;
	top: 3px;
	width: 1px;
	height: 100%;
	text-indent: 5px;
    pointer-events: none;
}
.hRule .tickMajor {
	position: absolute;
	bottom: 0px;
	width: 1px;
	height: 6px;
    pointer-events: none;
}
.hRule .tickMinor {
	position: absolute;
	bottom: 0px;
	width: 1px;
	height: 4px;
    pointer-events: none;
}
.vRule .tickLabel {
	position: absolute;
	right: 0px;
	height: 1px;
	width: 100%;
	text-indent: 5px;
    pointer-events: none;
}
.vRule .tickLabel span {
	display: block;
	position: absolute;
	top: 5px;
	right: 5px;
	margin-right: 18px;
	-webkit-transform: rotate(-90deg);
  -moz-transform: rotate(-90deg);
  -ms-transform: rotate(-90deg);
  -o-transform: rotate(-90deg);
  transform: rotate(-90deg);
	
	-webkit-transform-origin: top right;
  -moz-transform-origin: top right;
  -ms-transform-origin: top right;
  -o-transform-origin: top right;
  transform-origin: top right;
    pointer-events: none;
	
}
.vRule .tickMajor {
	position: absolute;
	right: 0px;
	height: 1px;
	width: 6px;
    pointer-events: none;
}
.vRule .tickMinor {
	position: absolute;
	right: 0px;
	height: 1px;
	width: 4px;
    pointer-events: none;
}

.vMouse {
	display: block;
	position: absolute;
	height: 0px;
	color: blue;
	left: 1px;
	background: rgba(0,0,0,0);
	border-left: 22px solid #288edf;
    border-bottom: 22px solid transparent;
    opacity: 0.6;
	z-index: 11;
    pointer-events: none;
}

.vGuide {
    cursor:col-resize;
    pointer-events: all;
	display: block;
	position: absolute;
	width: 0px;
    height:100%;
	top: 0;
	background: rgba(0,0,0,0);
    color: red;
	border-left: 1px solid;
	z-index: 6;
    pointer-events: all;
    opacity:0.2;
    height: 100% !important;
}

.hGuide {
    cursor:row-resize;
	display: block;
	position: absolute;
	width: 100%;
	top: 0;
	background: rgba(0,0,0,0);
    color: red;
	border-bottom: 1px solid;
	z-index: 6;
    pointer-events: all;
    opacity: 0.2;
    width: 100% !important;
    pointer-events: all;
}

.hMouse {
	display: block;
	position: absolute;
	top: 1px;
	background: rgba(0,0,0,0);
	border-top: 22px solid #288edf;
    border-right: 22px solid transparent;
    opacity: 0.6;
	z-index: 11;
    pointer-events: none;
}

.mousePosBox {
	height: 16px;
	background: rgba(0,0,0,0.25);
	color: #fff;
	font-family: source code pro;
	font-size: 12px;
	line-height: 16px;
	border: 1px solid rgba(0,0,0,0.5);
	position: fixed;
	white-space: no-wrap;
	display: block;
	overflow-y:hidden;
	float: left;
	text-align: left;
	left: -50%;
	top: -50%;
	padding: 0 2px;
}