td {
  border: 2px solid black;
  height: 100px;
  width: 100px;
  text-align: center;
  vertical-align: middle;
  font-family: "Comic Sans MS", cursive, sans-serif;
  cursor: pointer;
  font-size: 3rem;
}

table {
  border-collapse: collapse;
  position: absolute;
  left: 50%;
  margin-left: -155px;
  top: 50px;
}

table tr:first-child td {
  border-top: 0;
}

table tr:last-child td {
  border-bottom: 0;
}

table tr td:first-child {
  border-left: 0;
}

table tr td:last-child {
  border-right: 0;
}

.endgame {
  display: none;
  width: 200px;
  top: 120px;
  background-color: rgba(205, 133, 63, 0.8);
  position: absolute;
  left: 50%;
  margin-left: -100px;
  padding-top: 50px;
  padding-bottom: 50px;
  text-align: center;
  border-radius: 5px;
  color: white;
  font: 2em;
}