body {
  margin: 0;
  padding-top: 25px;
  background-color: antiquewhite;
}

.mainForm {
  display: block;
  width: 330px;
  margin: 0 auto;
}

.mainForm section {
  display: block;
  background-color: aliceblue;
  border: solid white 1px;
  box-shadow: 4px 4px 4px grey;
  padding-bottom: 12px;
}

.gameFieldWrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  padding: 4px 0 10px 0;
}

.btn {
  width: 100px;
  height: 100px;
  font-size: 24px;
  margin: 3px;
}

.x {
color: royalblue;
}

.o {
color: brown;
}

.playAgainBtn {
  display: block;
  margin: 0 auto;
  width: 200px;
  height: 50px;
  font-size: 20px;
  cursor: pointer;
  background-color: royalblue;
  border: none;
  border-radius: 5px;
  color: white;
  font-weight: bold;
}

p {
  text-align: center;
}

p a{
  text-align: center;
  color: royalblue;
}