* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
  }
 
  .container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgb(0, 255, 242);
  }
 
  h1 {
    font-size: 5rem;
    margin-bottom: 0.5em;
  }
 
  h2 {
    margin-top: 1em;
    font-size: 2rem;
    margin-bottom: 0.5em;
  }
 
  .play-area {
    display: grid;
    width: 300px;
    height: 300px;
    grid-template-columns: auto auto auto;
  }
 
  .block {
    display: flex;
    width: 100px;
    height: 100px;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: bold;
    border: 3px solid rgb(47, 0, 255);
    transition: background 0.2s ease-in-out;
  }
 
  .block:hover {
    cursor: pointer;
    background: #0ff30f;
  }
 
  .occupied:hover {
    background: #ff3a3a;
  }
 
  .win {
    background: #0ff30f;
  }
 
  .win:hover {
    background: #0ff30f;
  }
 
  #block_0,
  #block_1,
  #block_2 {
    border-top: none;
  }
 
  #block_0,
  #block_3,
  #block_6 {
    border-left: none;
  }
 
  #block_6,
  #block_7,
  #block_8 {
    border-bottom: none;
  }
 
  #block_2,
  #block_5,
  #block_8 {
    border-right: none;
  }
 
  button {
    outline: none;
    border: 4px solid rgb(255, 102, 0);
    padding: 10px 20px;
    font-size: 1rem;
    font-weight: bold;
    background: none;
    transition: all 0.2s ease-in-out;
  }
 
  button:hover {
    cursor: pointer;
    background: rgb(255, 136, 0);
    color: rgb(245, 12, 12);
  }
 
  .playerWin {
    color: green;
  }
 
  .computerWin {
    color: red;
  }
 
  .draw {
    color: orangered;
  }
 
  @media only screen and (max-width: 600px) {
 
    h1 {
      font-size: 3rem;
      margin-bottom: 0.5em;
    }
 
    h2 {
      margin-top: 1em;
      font-size: 1.3rem;
    }
  }