h1, h2, h3, h4, h5, h6 {
  font-family: "Indie Flower", serif;
  text-align: center; }

h1 {
  font-size: 5em;
  margin: 0px; }

body {
  font-family: "Raleway", sans-serif;
  margin: 0px;
  background-color: #f4f4f4; }

.content-wrapper {
  max-width: 750px;
  margin: auto; }

.board {
  background-color: tomato;
  padding: 20px;
  max-width: 500px;
  margin: auto;
  border-radius: 10px; }

.black-player .board-cell:hover .overlay {
  background-color: black; }

.white-player .board-cell:hover .overlay {
  background-color: white; }

.board-cell {
  display: inline-block;
  position: relative;
  padding: 5.5555555556%; }
  .board-cell .overlay {
    position: absolute;
    box-sizing: border-box;
    top: 10%;
    left: 10%;
    width: 80%;
    height: 80%;
    border-radius: 50%;
    transition: background-color .25s; }
  .board-cell.small {
    padding: 5.5555555556%; }
  .board-cell.medium {
    padding: 3.8461538462%; }
  .board-cell.large {
    padding: 2.6315789474%; }

.black-cell .overlay {
  background-color: black; }

.white-cell .overlay {
  background-color: white; }

.split-wrapper {
  display: flex;
  width: 100%; }
  @media screen and (max-width: 640px) {
    .split-wrapper {
      flex-direction: column; } }

.split-item {
  flex-grow: 1;
  box-sizing: border-box; }

.split-wrapper form {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px; }
  .split-wrapper form input {
    margin-top: 20px;
    padding: 5px;
    padding-left: 10px;
    padding-right: 10px;
    border: none;
    outline: none;
    width: 100%;
    max-width: 300px; }
  .split-wrapper form input[type="radio"] {
    opacity: 0;
    width: 0px;
    height: 0px; }
    .split-wrapper form input[type="radio"]:checked ~ label {
      color: tomato;
      transition: color .25s; }
  .split-wrapper form input[type="submit"] {
    padding: 10px;
    background-color: tomato;
    color: white; }
    .split-wrapper form input[type="submit"]:focus, .split-wrapper form input[type="submit"]:hover {
      background-color: inherit;
      color: tomato;
      transition: background-color .25s, color .25s; }
  .split-wrapper form input[type="text"] {
    background-color: inherit;
    border-bottom: solid tomato;
    border-width: 2px;
    height: 3em;
    box-sizing: border-box;
    display: block; }
    .split-wrapper form input[type="text"]:focus {
      border-width: 3px;
      transition: background-color .25s, border-width .25s; }
  .split-wrapper form .radio-parent {
    display: flex;
    margin-top: 20px;
    width: 100%;
    max-width: 300px; }
  .split-wrapper form .radio-wrapper {
    flex-grow: 1;
    display: inline-block;
    text-align: center; }