.farmCalculator {
  border: 1px solid #ccc;
  padding: 15px;
  margin: 10px 0;
  background: #f9f9f9;
}
.farmCalculator h4 {
  margin-top: 0;
}
.farmCalculator label {
  font-weight: bold;
}
.farmCalculator input {
  margin-bottom: 10px;
}