#fontTest,#rulerBox{position:absolute;height:auto}#rulerBox{width:100%;top:37px;bottom:0;z-index:1;left:0;pointer-events:none}#ruler{width:1px;background:#373737;height:100%;position:relative;margin-left:0;margin-right:auto;opacity:.5;border:none;box-shadow:none}#fontTest{visibility:hidden;font-family:monospace;font-size:12px;line-height:16px;width:auto}