XYmapper.css

.ledpixel {
  display:table-cell;
  position: relative;
  margin: 0em;
  border:1px solid gray;
  min-width: 3em;
  height: 3em;
  text-align: right;
  vertical-align: bottom;
  background-image: url("ws2812.png");
  background-size: 100% 100%;
}

.disabledPixel {
  display:table-cell;
  position: relative;
  margin: 0em;
  border:1px solid gray;
  min-width: 3em;
  height: 3em;
  text-align: center;
  vertical-align: bottom;
}

.ledtext {
  display:inline-block;
  position: absolute;
  right:0;
  bottom:0;
  color: white;
  font-size: 0.75em;
  line-height: 1em;
  border: none;
  border-radius: 0.5em 0 0 0;
  font-family: sans-serif;
  text-align: right;
  background-color: blue;
  padding: 0.25em 0.1em  0.1em 0.25em;
}

.ledarray {
  display: table;
  border-collapse: collapse;
  background-color: black;
  margin-top: 1em;
  margin-bottom: 1em;
}

.ledrow {
  display: table-row;
}

.ylabels {
  display: table-cell;
  border:1px solid gray;
  vertical-align: middle;
  text-align: center;
  font-size: 1em;
  min-width: 2em;
  color: white;
  font-family: sans-serif;
}
.xlabels {
  display: table-cell;
  border:1px solid gray;
  vertical-align: middle;
  text-align: center;
  font-size: 1em;
  height: 2em;
  color: white;
  font-family: sans-serif;
}

.triangle-left {
  position:absolute;
  top: 0;
  right:0;
  width:0;
  height:0;
  border-style: solid;
  border-width: 0.5em;
  border-color: transparent #FF0000 transparent transparent;
}

.triangle-right {
  position:absolute;
  top: 0;
  left:0;
  width:0;
  height:0;
  border-style: solid;
  border-width: 0.5em;
  border-color: transparent transparent transparent #00FF00;
}

.triangle-top {
  position:absolute;
  top: 0;
  left:0;
  width:0;
  height:0;
  border-style: solid;
  border-width: 0.5em;
  border-color: #00FF00 transparent transparent transparent;
}

.triangle-bottom {
  position:absolute;
  bottom: 0;
  left:0;
  width:0;
  height:0;
  border-style: solid;
  border-width: 0.5em;
  border-color: transparent transparent #FF0000 transparent;
}


.controls {
  font-size: 1em;
  display: block;
}
.inputBox {
  height: 1.5em;
  line-height: 1.5em;
  width: 8em;
  display: block;
}

.inputBox input {
  display: block;
  float:none;
  font-size: 1em;
  padding: 0; margin: 0;
  width: 3em;
}

.inputText {
  display:block;
  float:left;
  width: 4em;
}

#rebuildArray {
  font-size: 1em;
  width: 8em;
  float:none;
}

#result {
  background: black;
  color: lime;
  padding: 1em;
}