style.css

/* add reset styles */
*{
    margin: 4px;
}
/* add global styles */
body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: row;
    text-align: center;
}
div{
    margin: auto;
}
  
  h1 {
    text-align: center;
  }
  /* style forms */
  form {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
  }
  
  label {
    font-size: 1.2em;
    margin-bottom: 10px;
  }
  /* style numbered inputs */
  input[type=number] {
    width: 100px;
    font-size: 1.2em;
    padding: 5px;
    border: none;
    border-bottom: 2px solid #ccc;
    text-align: center;
    margin-bottom: 10px;
  }
  
  button {
    padding: 10px 20px;
    font-size: 1.2em;
    background-color: #4CAF50;
    color: #fff;
    border: none;
    cursor: pointer;
  }
  /*add hover effect to buttons  */
  button:hover {
    background-color: #3e8e41;
  }
  
  p {
    text-align: center;
    margin-top: 20px;
    font-size: 1.2em;
    font-weight: bold;
  }