body {
      font-family: sans-serif;
      text-align: center;
      padding: 30px;
      background: #f5f5f5;
      font-family: 'Prompt', sans-serif;
    }
    #card {
      font-size: 48px;
      margin: 30px auto;
      background: white;
      padding: 30px;
      width: 200px;
      border-radius: 10px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    }
#speedCard {
      font-size: 48px;
      margin: 30px auto;
      background: white;
      padding: 30px;
      width: 200px;
      border-radius: 10px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    }
    button {
      padding: 10px 20px;
      font-size: 18px;
      border: none;
      background: #4285f4;
      color: white;
      border-radius: 5px;
      cursor: pointer;
      margin: 10px;
    }
    button:hover {
      background: #2a68d1;
    }
    input[type="number"], input[type="text"] {
      padding: 8px;
      font-size: 16px;
      margin: 5px;
    }
    #recallArea {
      margin-top: 30px;
      display: none;
    }
    #timer {
      font-size: 20px;
      margin-top: 10px;
    }
    label {
      display: block;
      margin: 5px 0;

}

#letterSelection {
  background: #f8f8f8;
  padding: 10px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}