body {
  background: black;
  font-family: sans-serif;
  text-align: center;
}

h1 {
  color: white;
  text-align: center;
  font-size: 54px;
  margin-right: 50px;
}

input {
 margin: 5px;
 background: black;
 color: white;
 font-size: 64px;
 text-align: center;
 border: solid white;
 text-transform: uppercase;
 caret-color: transparent;
}

input:focus {
  outline: none;
  box-shadow: none;
}

.row1 {
  width: 80px;
  height: 80px;
}

.row2 {
  width: 80px;
  height: 80px;
}

.row3 {
  width: 80px;
  height: 80px;
}

.row4 {
  width: 80px;
  height: 80px;
}

.row5 {
  width: 80px;
  height: 80px;
}

.row6 {
  width: 80px;
  height: 80px;
}

button {
  background-color: black;
  border: transparent;
  text-shadow: none;
}

button:focus {
  outline: none;
  box-shadow: none;
}

p {
  color: white;
  font-size: 24px;
  margin-right: 50px;
}

@media (max-width: 390px) {
 h1 {
  font-size: 36px;
  margin-right: 50px;
 }

 input {
  font-size: 24px;
  margin: 2px;
 }

  .row1 {
    width: 50px;
    height: 50px;
  }
  
  .row2 {
    width: 50px;
    height: 50px;
  }
  
  .row3 {
    width: 50px;
    height: 50px;
  }
  
  .row4 {
    width: 50px;
    height: 50px;
  }
  
  .row5 {
    width: 50px;
    height: 50px;
  }
  
  .row6 {
    width: 50px;
    height: 50px;
  }

  p {
    font-size: 18px;
    margin-right: 10px;
  }
}

@media (max-width: 500px) {
  h1 {
    font-size: 36px;
  }

  input {
    font-size: 24px;
    margin: 2px;
    }

  .row1 {
    width: 50px;
    height: 50px;
  }
    
  .row2 {
    width: 50px;
    height: 50px;
  }
    
  .row3 {
    width: 50px;
    height: 50px;
  }
    
  .row4 {
    width: 50px;
    height: 50px;
  }
    
  .row5 {
    width: 50px;
    height: 50px;
  }
    
  .row6 {
    width: 50px;
    height: 50px;
  }

  p {
    font-size: 18px;
    margin-right: 50px;
  }
}