.achtergrond{
    position: relative;
    background-color:#0D2CFF;background:url('../images/patronen/achtergrond-schoolgerief.jpg') repeat;
    border-radius: 18px;
    padding: 35px;
    box-shadow: 
        0 12px 30px rgba(0,0,0,0.15),
        inset 0 0 40px rgba(255,255,255,0.4);
    }
.crossword {
  margin: 1em auto;
  position: relative;
}
.crossword-clues {
  font-size: 12px;
}
.crossword-buttons {
  clear: both;
  text-align: center;
  padding-top: 1em;
    position: absolute;
    top: -30px;
  left: 700px;
}
.crossword-buttons button {
  margin: 0 0.5em;
  min-width: 200px;
}
table.crossword-grid {
  width: 100%;
  max-width: 100%;
  border-spacing: 0;
  border-collapse: collapse; 
}
.grid-row {
  clear: left;
}
.grid-square {
  position: relative;
  background-clip: padding-box;
}
.grid-square:after {
  content: '';
  display: block;
  margin-top: 100%;
}
.grid-square.active {
  border: 2px solid black;
    background: #fff;
}
.grid-square.current-word {
  background-color: #ffff99;
}
.grid-square.correct-across,
.grid-square.correct-down {
  background-color: #dff0d8;
}
.grid-square.correct-across.current-word,
.grid-square.correct-down.current-word {
  background-color: #dff082;
}
.grid-square .word-label {
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  line-height: 1;
  font-size: calc(10px + .25vw);
  color: rgba(0, 0, 0, 0.5);
  pointer-events: none;
}
.grid-square input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  text-align: center;
  font-size: 1.2em;
  font-size: calc(10px + .5vw);
  font-weight: 600;
  border: 0;
  padding: 0;
  text-transform: lowercase;
  border-radius: 0;
  background: transparent;
}
.crossword-clues li {
  position: relative;
}
.crossword-clues li label {
  display: block;
  font-weight: normal;
  cursor: pointer;
}
.crossword-clues li.active {
  background: #ffff99;
}
.crossword-clues li.correct {
  background: transparent;
  color: green;
  text-decoration: line-through;
}
.crossword-clues li.correct.active {
  background: #dff082;
}
.crossword-clues li.correct label:before {
  content: "\f00c";
  display: inline-block;
  font: normal normal normal 14px/1 FontAwesome;
  font-size: inherit;
  text-rendering: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: absolute;
  left: 0;
  top: 0.1em;
}
.clue-tooltip {
  position: absolute;
  z-index: 10;
  background: rgba(255, 196, 35, 0.9);
  padding: 4px 10px;
  margin-bottom: 10px;
  -webkit-transform: translateY(-100%);
          transform: translateY(-100%);
  max-width: 90vw;
}
.clue-tooltip .clue-tooltip-arrow {
  display: block;
  border: 8px solid transparent;
  border-top-color: rgba(255, 196, 35, 0.9);
  border-bottom: none;
  position: absolute;
  top: 100%;
}