body {
  background-color: #f8f9fa;
}

form {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
  background-color: #fff;
  border-radius: 5px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

label {
  display: inline-block;
  width: 150px;
  text-align: right;
  margin-right: 10px;
}

input[type="date"],
input[type="number"],
select {
  width: 200px;
  padding: 5px;
  border-radius: 5px;
  border: 1px solid #ccc;
  font-size: 16px;
}

select {
  width: 215px;
}

#months,
#total-price {
  width: 200px;
  padding: 5px;
  border-radius: 5px;
  border: 1px solid #555;
  background-color: #ccc;
  font-size: 16px;
}

h1 {
  text-align: center;
  margin-top: 50px;
}

#other-price {
  margin-left: 0px;
}

#custom-price {
  width: 200px;
  padding: 5px;
  border-radius: 5px;
  border: 1px solid #ccc;
  font-size: 16px;
  margin-left: 0px;
}

label[for="total-price"],
input[name="total-price"] {
  font-weight: bold;
}

button {
  display: block;
  margin: 0 auto;
  padding: 10px 20px;
  border-radius: 5px;
  border: none;
  background-color: #007bff;
  color: #fff;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  background-color: #0069d9;
}