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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

            
               <div class="icon-bar header">
    <a href="https://chrisandsuch.github.io/" class="github">
      <i class="fab fa-github-square"></i>
    </a>
    <a href="https://www.freecodecamp.org/chrisandsuch" class="fcc">
      <i class="fab fa-free-code-camp"></i>
    </a>
  </div>
  <div class="display">
    <ul>
      <li><span id="current-player"></span></li>
      <li><span id="current-player-letter"></span></li>
    </ul>
      <h3 id="current-player"></h3>
  </div>
  <div class="container" id="game-board">
    <div id="board">
      <div class="tile column-0 row-0 diagonal-0" id="0"></div>
      <div class="tile column-1 row-0" id="1"></div>
      <div class="tile column-2 row-0 diagonal-1" id="2"></div>
      <div class="tile column-0 row-1" id="3"></div>
      <div class="tile column-1 row-1 diagonal-0 diagonal-1" id="4"></div>
      <div class="tile column-2 row-1" id="5"></div>
      <div class="tile column-0 row-2 diagonal-1" id="6"></div>
      <div class="tile column-1 row-2" id="7"></div>
      <div class="tile column-2 row-2 diagonal-0" id="8"></div>
    </div>
  </div>

  <div class="modal" id="player-menu">
    <div class="modal-content">
      <div class="modal-header">
        <h2>Welcome to TicTacToe</h1>
          <hr>
          <h5>Choose an option:</h5>
      </div>
      <div class="modal-body">
        <button id="one-player" value="one" class="button">One Player</button>
        <button id="two-player" value="two" class="button">Two Player</button>
      </div>
    </div>
  </div>

  <div class="modal" id="letter-menu">
    <div class="modal-content">
      <div class="modal-header">
        <h1>Choose a letter:</h1>
      </div>
      <div class="modal-body">
        <button id="letter-x" value="X" type="button" class="button">X</button>
        <button id="letter-o" value="O" type="button" class="button">O</button>
      </div>
    </div>
  </div>
      <div class="modal" id="count-down">
          <div class="modal-content">
            <div class="modal-header">
              
            </div>
            <div class="modal-body">
                <h1 class="count-down">Game starts in...</h1>
         </div>
          </div>
        </div>
  <div class="modal" id="winner-menu">
    <div class="modal-content">
      <div class="modal-header">
        <h1 id="winner"></h1>
      </div>
      <div class="modal-body">
        <button id="play-again" value="X" type="button" class="button">Play Again?</button>
      </div>
    </div>
  </div>

            
          
!

CSS

            
              * {
    box-sizing: border-box;
}
body {
    position: relative;
    background-color: #f4f4f4;
  } 

.container {
    overflow: hidden;
    width: 300px;
    height: 300px;
    position: absolute;
    left: 10%;
    background-image: url("https://github.com/chrisandsuch/freeCodeCamp/blob/master/projects/tic-tac-toe/chalkboard.jpg?raw=true");
    background-repeat: no-repeat;
    background-size: cover;
    display: grid;
    grid-template-columns: 1fr 4fr 1fr;
}
ul {
  list-style: none;
}
#board {
    grid-row: 2 / 2;
    grid-column: 2 / 2;
    display: grid;
    grid-template-columns: auto auto auto;
    width: 200px;
    height: 200px;
}

.tile {
    width: 65px;
    height: 65px;
    border: 1.5px solid whitesmoke;
    font-family: 'Gochi Hand', cursive;
    color: whitesmoke;
    text-align: center;
    font-size: 2.5em;  
}
.column-0 {
    grid-column: 1 / 1;
}
.column-1 {
    grid-column: 2 / 2;
}
.column-2 {
    grid-column: 3 / 3;
}
.icon-bar {
    position: fixed;
    top: 20%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
  }
.icon-bar a {
    display: block;
    text-align: center;
    padding: 2px;
    transition: all 0.3s ease;
    color: white;
    font-size: 1em;
  }
.icon-bar a:hover {
      background-color: #000;
  }
  
.github {
    background: rgba(36, 41, 46, 0.619);
    color: white;
  }
.fcc {
    background: #056312;
    color: white;
  }
.content {
    margin-left: 75px;
    font-size: 30px;
  }

#count-down {
  display: "none";
}


/* Modal */

.modal {
    /* display: grid; */
    position: fixed;
    z-index: 1;
    /* higher index means more up front (depth) */
    left: 0;
    top: 0%;
    padding-top: 10%;
    height: 100%;
    width: 100%;
    overflow: auto;
  }
  
  .modal-content {
    margin: 0% auto;
    padding: 20px;
    width: 70%;
    box-shadow: 5px 5px 8px 0 rgba(0, 0, 0, 0.2),
      5px 7px 20px 0 rgba(0, 0, 0, 0.6);
    border: 2px solid black;
    border-radius: 20px;
    animation-name: modalopen;
    animation-duration: 2s;
  }
  
  @keyframes modalopen {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }
  
  .modal-header {
    color: green;
    text-align: center;
  }
  
  .modal-body {
    color: green;
    font-size: 1em;
    text-align: center;
    width: 100%;
    height: auto;
    border-radius: 20px;
  }
            
          
!

JS

            
              //@ts-check
const P1 = {
  name: "P1",
  full_name: "Player 1",
  letter: ""
};
const P2 = {
  name: "P2",
  full_name: "Player 2",
  letter: ""
};
const AI = {
  name: "AI",
  full_name: "Computer",
  letter: "",
  move() {
    let rows = ["", "", ""];
    let columns = ["", "", ""];
    let diagonals = ["", ""];
    let hasMoved = false;
    let opponent = new RegExp(P1.letter + "{2}", "g");
    let self = new RegExp(AI.letter + "{2}", "g");
    let OO = /O{2}/g;
    let id = /\d/;
    document.querySelectorAll(".row-0").forEach(function(tile) {
      if (tile.textContent === "") {
        rows[0] += tile.id;
      } else {
        rows[0] += tile.textContent;
      }
    });
    document.querySelectorAll(".row-1").forEach(function(tile) {
      if (tile.textContent === "") {
        rows[1] += tile.id;
      } else {
        rows[1] += tile.textContent;
      }
    });
    document.querySelectorAll(".row-2").forEach(function(tile) {
      if (tile.textContent === "") {
        rows[2] += tile.id;
      } else {
        rows[2] += tile.textContent;
      }
    });
    document.querySelectorAll(".column-0").forEach(function(tile) {
      if (tile.textContent === "") {
        columns[0] += tile.id;
      } else {
        columns[0] += tile.textContent;
      }
    });
    document.querySelectorAll(".column-1").forEach(function(tile) {
      if (tile.textContent === "") {
        columns[1] += tile.id;
      } else {
        columns[1] += tile.textContent;
      }
    });
    document.querySelectorAll(".column-2").forEach(function(tile) {
      if (tile.textContent === "") {
        columns[2] += tile.id;
      } else {
        columns[2] += tile.textContent;
      }
    });
    document.querySelectorAll(".diagonal-0").forEach(function(tile) {
      if (tile.textContent === "") {
        diagonals[0] += tile.id;
      } else {
        diagonals[0] += tile.textContent;
      }
    });
    document.querySelectorAll(".diagonal-1").forEach(function(tile) {
      if (tile.textContent === "") {
        diagonals[1] += tile.id;
      } else {
        diagonals[1] += tile.textContent;
      }
    });
    if (/\d/.test(rows[0]) && hasMoved === false) {
      let tileId = /\d/.exec(rows[0]);
      if (self.test(rows[0])) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      } else if (self.test(rows[0]) && hasMoved === false) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      }
    }
    if (/\d/.test(rows[1]) && hasMoved === false) {
      let tileId = /\d/.exec(rows[1]);
      if (self.test(rows[1])) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      } else if (opponent.test(rows[1]) && hasMoved === false) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      }
    }
    if (/\d/.test(rows[2]) && hasMoved === false) {
      let tileId = /\d/.exec(rows[2]);
      if (self.test(rows[2])) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      } else if (opponent.test(rows[1]) && hasMoved === false) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      }
    }
    if (/\d/.test(columns[0]) && hasMoved === false) {
      let tileId = /\d/.exec(columns[0]);
      if (self.test(columns[0])) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      } else if (opponent.test(columns[0]) && hasMoved === false) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      }
    }
    if (/\d/.test(columns[1]) && hasMoved === false) {
      let tileId = /\d/.exec(columns[1]);
      if (self.test(columns[1])) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      } else if (opponent.test(columns[1]) && hasMoved === false) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      }
    }
    if (/\d/.test(columns[2]) && hasMoved === false) {
      let tileId = /\d/.exec(columns[2]);
      if (self.test(columns[2])) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      } else if (opponent.test(columns[2]) && hasMoved === false) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      }
    }
    if (/\d/.test(diagonals[0]) && hasMoved === false) {
      let tileId = /\d/.exec(diagonals[0]);
      if (self.test(diagonals[0])) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      } else if (opponent.test(diagonals[0]) && hasMoved === false) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      }
    }
    if (/\d/.test(diagonals[1]) && hasMoved === false) {
      let tileId = /\d/.exec(diagonals[1]);
      if (self.test(diagonals[1])) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      } else if (opponent.test(diagonals[1]) && hasMoved === false) {
        document.getElementById(tileId.join("")).textContent = AI.letter;
        document
          .getElementById(tileId.join(""))
          .removeEventListener("click", BOARD.mark);
        hasMoved = true;
      }
    }
    if (hasMoved === false) {
      rows.forEach(function(row) {
        if (hasMoved === false && /\d/.test(row) === true) {
          let tileId = /\d/.exec(row);
          document.getElementById(tileId.join("")).textContent = AI.letter;
          document
            .getElementById(tileId.join(""))
            .removeEventListener("click", BOARD.mark);
          hasMoved = true;
        }
      });
    }
    checkStatus();
  }
};
const BOARD = {
  mark(e) {
    document.getElementById(e.target.id).textContent =
      GAME.state.current_player.letter;
    document
      .getElementById(e.target.id)
      .removeEventListener("click", BOARD.mark);
    checkStatus();
  }
};
const GAME = {
  state: {
    two_player: false,
    current_player: P1,
    hasWon: false,
    isTie: false
  },
  view: {
    playerMenu: document.getElementById("player-menu"),
    letterMenu: document.getElementById("letter-menu"),
    winnerMenu: document.getElementById("winner-menu"),
    gameScreen: document.getElementById("game-board"),
    countDown: document.getElementById("count-down")
  }
};
const reset = () => {
  document.querySelectorAll(".tile").forEach(tile => {
    tile.textContent = "";
  });
  P1.letter = "";
  P2.letter = "";
  AI.letter = "";
  GAME.state.isTie = false;
  GAME.state.hasWon = false;
  GAME.state.current_player = P1;
  GAME.state.two_player = false;
  document.getElementById("current-player").textContent = "";
  document.getElementById("current-player-letter").textContent = "";
  showPlayerMenu();
};

const attachListeners = () => {
  document.querySelectorAll(".tile").forEach(tile => {
    tile.addEventListener("click", BOARD.mark);
  });
};
const showCurrentPlayer = () => {
  document.getElementById("current-player").textContent = `Turn: ${
    GAME.state.current_player.full_name
  }`;
  document.getElementById("current-player-letter").textContent = `Letter: ${
    GAME.state.current_player.letter
  }`;
};

const checkStatus = () => {
  let total = 0;
  let rows = [0, 0, 0];
  let columns = [0, 0, 0];
  let diagonals = [0, 0];
  document.querySelectorAll(".row-0").forEach(function(tile) {
    if (tile.textContent === GAME.state.current_player.letter) {
      rows[0] = rows[0] + 1;
    }
  });
  document.querySelectorAll(".row-1").forEach(function(tile) {
    if (tile.textContent === GAME.state.current_player.letter) {
      rows[1] = rows[1] + 1;
    }
  });
  document.querySelectorAll(".row-2").forEach(function(tile) {
    if (tile.textContent === GAME.state.current_player.letter) {
      rows[2] = rows[2] + 1;
    }
  });
  document.querySelectorAll(".column-0").forEach(function(tile) {
    if (tile.textContent === GAME.state.current_player.letter) {
      columns[0] = columns[0] + 1;
    }
  });
  document.querySelectorAll(".column-1").forEach(function(tile) {
    if (tile.textContent === GAME.state.current_player.letter) {
      columns[1] = columns[1] + 1;
    }
  });
  document.querySelectorAll(".column-2").forEach(function(tile) {
    if (tile.textContent === GAME.state.current_player.letter) {
      columns[2] = columns[2] + 1;
    }
  });
  document.querySelectorAll(".diagonal-0").forEach(function(tile) {
    if (tile.textContent === GAME.state.current_player.letter) {
      diagonals[0] = diagonals[0] + 1;
    }
  });
  document.querySelectorAll(".diagonal-1").forEach(function(tile) {
    if (tile.textContent === GAME.state.current_player.letter) {
      diagonals[1] = diagonals[1] + 1;
    }
  });
  document.querySelectorAll(".tile").forEach(function(tile) {
    if (/X|O/.test(tile.textContent)) {
      total = total + 1;
    }
  });
  if (rows.includes(3)) {
    GAME.state.hasWon = true;
  } else if (columns.includes(3)) {
    GAME.state.hasWon = true;
  } else if (diagonals.includes(3)) {
    GAME.state.hasWon = true;
  } else if (total === 9) {
    GAME.state.hasWon = true;
    GAME.state.isTie = true;
  }
  gameLogic();
};

const gameLogic = () => {
  switch (GAME.state.hasWon) {
    case true:
      viewController(
        GAME.view.winnerMenu,
        GAME.view.countDown,
        GAME.view.playerMenu,
        GAME.view.letterMenu,
        GAME.view.gameScreen
      );
      if (GAME.state.isTie) {
        document.getElementById("winner").textContent = "GAME ENDED IN A TIE!";
        document.getElementById("play-again").addEventListener("click", reset);
      } else if (GAME.state.isTie === false) {
        document.getElementById("winner").textContent = `${
          GAME.state.current_player.full_name
        } HAS WON!`;
        document.getElementById("play-again").addEventListener("click", reset);
      }
      break;
    case false:
      if (GAME.state.two_player) {
        if (GAME.state.current_player.name === "P1") {
          GAME.state.current_player = P2;
        } else if (GAME.state.current_player.name === "P1") {
          GAME.state.current_player = P1;
        }
      } else if (GAME.state.two_player === false) {
        if (GAME.state.current_player.name === "P1") {
          GAME.state.current_player = AI;
          AI.move();
        } else if (GAME.state.current_player.name === "AI") {
          GAME.state.current_player = P1;
        }
      }
      showCurrentPlayer();
      break;
  }
};
const viewController = (show, ...hide) => {
  hide.forEach(view => {
    view.style.display = "none";
  });
  show.id === "game-board"
    ? (show.style.display = "grid")
    : (show.style.display = "block");
};

const countDown = () => {
  viewController(
    GAME.view.countDown,
    GAME.view.playerMenu,
    GAME.view.letterMenu,
    GAME.view.winnerMenu,
    GAME.view.gameScreen
  );
  setTimeout(() => {
    document.querySelector(".count-down").textContent = "3";
  }, 1000);
  setTimeout(() => {
    document.querySelector(".count-down").textContent = "2";
  }, 2000);
  setTimeout(() => {
    document.querySelector(".count-down").textContent = "1";
  }, 3000);
  setTimeout(() => {
    document.querySelector(".count-down").textContent = "Game starts in...";
    viewController(
      GAME.view.gameScreen,
      GAME.view.playerMenu,
      GAME.view.letterMenu,
      GAME.view.playerMenu,
      GAME.view.winnerMenu,
      GAME.view.countDown
    );
    showCurrentPlayer();
    if (GAME.state.current_player.name === AI.name) {
      AI.move();
    }
    attachListeners();
  }, 4000);
};
const showPlayerMenu = () => {
  let players = [];
  let random = Math.floor(Math.random() * 2);
  viewController(
    GAME.view.playerMenu,
    GAME.view.letterMenu,
    GAME.view.winnerMenu,
    GAME.view.gameScreen,
    GAME.view.countDown
  );
  document.getElementById("one-player").addEventListener("click", () => {
    players = [P1, AI];
    GAME.state.two_player = false;
    GAME.state.current_player = players[random];
    showLetterMenu();
  });
  document.getElementById("two-player").addEventListener("click", () => {
    players = [P1, P2];
    GAME.state.two_player = true;
    GAME.state.current_player = players[random];
    showLetterMenu();
  });
};
const showLetterMenu = () => {
  viewController(
    GAME.view.letterMenu,
    GAME.view.playerMenu,
    GAME.view.winnerMenu,
    GAME.view.gameScreen,
    GAME.view.countDown
  );
  document.getElementById("letter-x").addEventListener("click", () => {
    P1.letter = "X";
    GAME.state.two_player ? (P2.letter = "O") : (AI.letter = "O");
    countDown();
  });
  document.getElementById("letter-o").addEventListener("click", () => {
    P1.letter = "O";
    GAME.state.two_player ? (P2.letter = "X") : (AI.letter = "X");
    countDown();
  });
};
showPlayerMenu();

            
          
!
999px

Console