.container { max-width: 1000px; margin: 0px auto; ...
  .container { width: 100%; margin: 0 auto; ...
  .container { margin-top: 100px; background-color: #fff; ...
  .calculator { background-color: #fff; padding: 20px; ...
  .container { max-width: 1000px; margin: 0 auto; background-color: #fff; padding: 20px; ...
  .calculator { background-color: white; padding: 20px; ...
  section { margin: 20px; } .calculator-container...
  .container { background-color: white; padding: 20px; ...
  .container { width: 100%; margin: 50px auto; ...
  .calculator-container { background-color: white; padding: 30px; border-radius: 8px; box-shadow: 0 4px 8px rgba(0, 0, 0,...