$crossword-CSS Grid

by mtambulut

HTML

<input type="checkbox" name="checkvaliditems" id="checkvaliditems" />
<label for="checkvaliditems">Check for valid squares</label>

<div class="crossword-board-container">

	<div class="crossword-board">
		<!-- ROW 1 -->
		<input id="item1-1" class="crossword-board__item" type="text" minlength="1" maxlength="1" pattern="^[sS]{1}$" required="required" value="" />
		<input id="item1-2" class="crossword-board__item" type="text" minlength="1" maxlength="1" pattern="^[hH]{1}$" required="required" value="" />
		<input id="item1-3" class="crossword-board__item" type="text" minlength="1" maxlength="1" pattern="^[rR]{1}$" required="required" value="" />
		<input id="item1-4" class="crossword-board__item" type="text" minlength="1" maxlength="1" pattern="^[oO]{1}$" required="required" value="" />
		<input id="item1-5" class="crossword-board__item" type="text" minlength="1" maxlength="1" pattern="^[uU]{1}$" required="required" value="" />
		<input id="item1-6" class="crossword-board__item" type="text" minlength="1" maxlength="1" pattern="^[dD]{1}$" required="required" value="" />
		<span class="crossword-board__item--blank" id="item1-7"></span>
		<span class="crossword-board__item--blank" id="item1-8"></span>
		<input id="item1-9" class="crossword-board__item" type="text" minlength="1" maxlength="1" pattern="^[eE]{1}$" required="required" value="" />
		<span class="crossword-board__item--blank" id="item1-10"></span>
		<input id="item1-11" class="crossword-board__item" type="text" minlength="1" maxlength="1" pattern="^[lL]{1}$" required="required" value="" />
		<span class="crossword-board__item--blank" id="item1-12"></span>
		<input id="item1-13" class="crossword-board__item" type="text" minlength="1" maxlength="1" pattern="^[fF]{1}$" required="required" value="" />
		<!-- ROW 1 -->

		<!-- ROW 2 -->
		<input id="item2-1" class="crossword-board__item" type="text" minlength="1" maxlength="1" pattern="^[lL]{1}$" required="required" value="" />
		<span...

CSS

.crossword-board-container {
  position: relative;
  background: #FFFFFF;
}

.crossword-board {
  position: absolute;
  z-index: 1;
  background: transparent;
  border: 1px solid #000000;
  width: 650px;
  height: 650px;
  display: -ms-grid;
  display: grid;
  grid-template: repeat(13, 7.69231%)/repeat(13, 7.69231%);
  list-style-type: none;
  padding: 0;
  margin: 0 auto;
}

.crossword-board__item {
  border: 1px solid #000000;
  background: transparent;
  position: relative;
  z-index: 100;
  text-align: center;
  font-size: 20px;
  font-weight: bold;
  text-transform: uppercase;
}
.crossword-board__item:active, .crossword-board__item:focus {
  background: #FFFF74;
  border: 1px solid #000000;
  outline: 1px solid #000000;
}

.crossword-board__item--blank {
  background: #000000;
  border: 1px solid #000000;
  outline: 1px solid #000000;
}

.crossword-board--labels {
  position: absolute;
  z-index: 60;
}

.crossword-board__item-label {
  position: relative;
}

.crossword-board__item-label-text {
  position: absolute;
  top: 2px;
  left: 2px;
  font-size: 14px;
  line-height: 1;
}

.crossword-board__item-label--1 {
  grid-column: 1/1;
}

.crossword-board__item-label--2 {
  grid-column: 4/4;
}

.crossword-board__item-label--3 {
  grid-column: 6/6;
}

.crossword-board__item-label--4 {
  grid-column: 9/9;
}

.crossword-board__item-label--5 {
  grid-column: 11/11;
}

.crossword-board__item-label--6 {
  grid-column: 13/13;
}

.crossword-board__item-label--7 {
  grid-column: 6/6;
  grid-row: 2/2;
}

.crossword-board__item-label--8 {
  grid-column: 3/3;
  grid-row: 3/3;
}

.crossword-board__item-label--9 {
  grid-column: 5/5;
  grid-row: 3/3;
}

.crossword-board__item-label--10 {
  grid-column: 1/1;
  grid-row: 4/4;
}

.crossword-board__item-label--11 {
  grid-column: 8/8;
  grid-row: 4/4;
}

.crossword-board__item-label--12 {
  grid-column: 10/10;
  grid-row: 4/4;
}

.crossword-board__item-label--13 {
  grid-column: 12/12;
  grid-row:...