index.css

.grid,
.grid * {
  box-sizing: border-box;
}
.grid {
  position: absolute;
  top: 40px;
  left: 13px;
}
.grid-chooser + .grid {
  display: none;
  background: white;
}

.grid-chooser:focus + .grid {
  display: block;
}

.grid-chooser + .grid .row:first-child .square:first-child .inner {
  background: rgb(175, 190, 199);
}

.grid-chooser + .grid .square:first-child {
  margin-top: 0;
}

.grid-chooser + .grid .square {
  height: 100%;
  float: left;
  padding: 1px;
}
.grid-chooser + .grid .square:hover .inner,
.grid-chooser + .grid .square.highlight .inner {
  background: rgb(175, 190, 199);
}

.inner {
  height: 100%;
  width: 100%;
  border-radius: 3px;
  background: rgb(0, 0, 0);
}
.context-menu-list {
  z-index: 100 !important;
}
#test {
  width: 1700px;
  min-height: 1000px;
  border: 1px solid black;
  position: relative;
  overflow: hidden;
  height: auto;
}

td {
  border: 1px solid black;
}

.tooltip-inner {
  max-width: 300px;
  width: 300px;
}

ul {
  text-align: left;
}

legend {
  text-align: left;
  margin-left: 38px;
  padding-left: 10px;
  width: 10% !important;
}

.guide {
  display: none;
  position: absolute;
  left: 0;
  top: 0;
}

#guide-h {
  border-top: 1px dashed #55f;
  width: 100%;
}

#guide-v {
  border-left: 1px dashed #55f;
  height: 100%;
}
.topline {
  position: absolute;
  width: 100000%;
  border-top: 1px #55f dashed;
  vertical-align: middle;
  margin-top: -1px;
  margin-left: -50000%;
  display: none;
}
.botline {
  position: absolute;
  width: 100000%;
  bottom: -2px;
  border-bottom: 1px #55f dashed;
  display: none;
  vertical-align: middle;
  margin-top: 500px;
  margin-left: -50000%;
}
.leftline {
  position: absolute;
  height: 1000000%;
  left: -1px;
  border-left: 1px #55f dashed;
  display: none;
  vertical-align: middle;
  margin-top: -50000%;
}
.rightline {
  position: absolute;
  height: 1000000%;
  right: -1px;
  border-right: 1px #55f dashed;
  display: none;
  vertical-align: middle;
  margin-top: -50000%;
}