body {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #120e69;
  color: #b7ffff;
  font-family: 'finger paint', cursive;
}

#board {
  display: grid;
  grid-template-columns: 100px 100px 100px;
  grid-template-rows: 100px 100px 100px;
  cursor: pointer;
  position: relative;
}

.tile {
  color: currentColor;
  font-size: 2em;
  display: flex;
  justify-content: center;
  align-items: center;
}

.right-border {
  border-right: 0.2em solid #b3ffff;
}

.bottom-border {
  border-bottom: 0.2em solid #b3ffff;
}

.strike {
  position: absolute;
  background-color: darkred;
}

.strike-row-1 {
  width: 100%;
  height: 4px;
  top: 15%;
}
.strike-row-2 {
  width: 100%;
  height: 4px;
  top: 48%;
}
.strike-row-3 {
  width: 100%;
  height: 4px;
  top: 83%;
}
.strike-column-1 {
  height: 100%;
  width: 4px;
  left: 15%;
}
.strike-column-2 {
  height: 100%;
  width: 4px;
  left: 48%;
}
.strike-column-3 {
  height: 100%;
  width: 4px;
  left: 83%;
}
.strike-diagonal-1 {
  width: 90%;
  height: 4px;
  top: 50%;
  left: 5%;
  transform: skewY(45deg);
}
.strike-diagonal-2 {
  width: 90%;
  height: 4px;
  top: 50%;
  left: 5%;
  transform: skewY(-45deg);
}

h1 {
  color: currentColor;
}

#game-over-area {
  text-align: center;
  border: #b3ffff 8px solid;
  padding: 50px;
  width: 50%;
  margin-top: 50px;
}

h2 {
  color: currentColor;
  font-size: 2em;
  margin-top: 0px;
}

button {
  background-color: transparent;
  color: currentColor;
  border: currentColor 1px solid;
  padding: 10px;
  font-size: 1.5em;
}

.hidden {
  display: none;
}

.visible {
  display: block;
}

.x-hover:hover::after {
  content: "X";
  opacity: 0.4;
}

.o-hover:hover::after {
  content: "O";
  opacity: 0.4;
}