body {
  font-family: Arial, sans-serif;
  background-color: #ffffff;
  color: #000000;
  text-align: center;
  margin: 0;
  padding: 0;
}
.container {
  padding: 40px;
}
h1 {
  font-size: 2.5rem;
  color: #002244;
}
.button {
  background-color: #002244;
  color: #fff;
  padding: 12px 20px;
  margin: 10px;
  text-decoration: none;
  display: inline-block;
  border-radius: 5px;
}
.button:hover {
  background-color: #0055aa;
}
.simulator {
  margin-top: 30px;
}
input[type="number"] {
  padding: 8px;
  margin: 10px;
  width: 200px;
}