body {
    background: black;
    text-align: center;
    color: white;
}

canvas {
    border: 1px solid white;
    background-color: white;
}

.center-screen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

#welcomeScreen p {
    color: black;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 34px;
    margin-bottom: 40px;
    text-align: center;
}

#initialsInput,
#startButton {
    display: block;
    margin: 10px auto;
}

  .modal {
    display: none;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 2;
  }
  
  .modal-content {
    position: absolute;
    color: black;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 20px;
    background-color: #ffffff;
    border-radius: 5px;
    text-align: center;
  }
  
  .close {
    position: absolute;
    right: 10px;
    top: 5px;
    cursor: pointer;
  }
  
  button {
    margin-top: 20px;
  }