body {
    font-family: 'Roboto Mono',monospace;
    min-height: 854px;
    background-image: url('https://i.imgur.com/XiTxguN.jpg');
    background-color: #000000;
    background-size: cover;
    background-position: center top;
    background-repeat: no-repeat;
  }
  
  .container {
    text-align: center;
    padding: 20px;
    height: 100vh;
  }
  
  .page-title {
    color: #ffffff;
    margin: 0 0 5px;
  }
  
  .page-subtitle {
    color: #ffffff;
    margin-top: 5px;
  }
  
  .page-logo {
    width: 200px;
  }

.centro {
  color: black;
  font-weight: bold;
  font-size: 15px;
}

  .alura-logo {
    width: 40px;
    position: absolute;
    top: 10px;
    right:10px;
  }

.resultado {
    font-size: 50px;
}

#caixa {
  width: 30px;
}