.container { max-width: 1000px; margin: 0 auto; ...
  .container { max-width: 1000px; margin: 0px auto; ...
  .container { width: 100%; margin: 0px auto; ...
  .calculator-container { background-color: #fff; padding: 20px; ...
  .calculator { background-color: #ffffff; padding: 20px; ...
  .container { max-width: 1000px; margin: 0 auto; ...
  .calculator { background-color: white; padding: 20px; border-radius: 8px; width: 300px; ...
  .container { background-color: white; box-shadow: 0px 0px 10px rgba(0,...
  .container { background-color: white; padding: 20px; ...
  .container { background-color: #fff; padding: 30px; ...