body {
  height: 100vh;
  width: 100vw;
  margin: 0;
  display: grid;
  place-items: center;
  background: #1f1e41;
  overflow: hidden;
}

svg {
  position: absolute;
  opacity: 0.5;
  mix-blend-mode: overlay;
  width: calc(110vw - 2%);
  left: -3%;
  height: auto;
}

table {
  position: absolute;
  top: 0;
  left: 0;
  height: 100vh;
  width: 100%;
  border: 0px solid gray;
  opacity: 0.8;
  mix-blend-mode: color-dodge;
  z-index: 9999999;
}

td {
  opacity: 0.5;
  color: white;
  font-weight: bold;
  font-family: monospace, monospace;
  text-align: center;
  width: calc(100% / 30);
  vertical-align: top;
  padding-top: 50px;
  position: relative;
  overflow: visible;
}

td:hover {
  text-align: center;
  border: 3px solid gray;
  border-top: 0px;
  border-bottom: 0px;
}

td:hover:after {
  content: var(--after-content, "Default Content");
  position: absolute;
  top: 50%;
  display: block;
  z-index: 999999;
  background-color: white;
  padding: 10px 0;
  color: black;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999999999;
  /* ensure it's on top */
}

#dateHolder {
  position: absolute;
  top: 50px;
  right: 50px;
  z-index: 9999999;
  padding: 5px;
  color: white;
  font-size: 1.2em;
  font-family: monospace, monospace;
  font-weight: bold;
  letter-spacing: 2px;
}

#longlat {
  position: absolute;
  text-align: right;
  top: 100px;
  right: 50px;
  z-index: 9999999;
  padding: 5px;
  color: white;
  font-size: 1em;
  font-family: monospace, monospace;
  letter-spacing: 2px;
}

canvas {
  mix-blend-mode: color-dodge;
  width: 100vw;
  height: 100vh;
  position: absolute;
  margin: 0 auto;
}