.page-content {
  display: table-cell;
  vertical-align: middle;
  margin: auto;
  text-align: center;
}

.page-content.b50 {
  background-color: #E9D7BF;
  margin-left: 25%;
  margin-right: 25%;
  padding: 1em;
  border-style: solid;
  border-color: #8B5E66;
  color: #221F22; }

.page-content .flex-container {
  
}

.page-content .flex-no-grow {
  flex-grow: 0; }

.page-content .flex-full-grow {
  padding-left: 10px;
  flex-grow: 1; }

.page-content #gl-canvas {
  width: 100%;
  aspect-ratio: 16 / 9;
}

.page-content .value-display {
  border-style: solid;
  border-width: 1px;
  padding: 3px;
  width: 5em; }

.page-content table.grid, .page-content table.grid th, .page-content table.grid td {
  border-style: solid;
  border-collapse: collapse;
  border-width: 1px;
  padding: 3px; }

.page-content .value-display-grid {
    display: inline-grid;
    grid-template-columns: 8em 2.5em 2.5em 2.5em;
    border-style: solid;
    border-width: 1px;
}