Here's why:
* Power steering was an option: While power steering became increasingly common, it wasn't standard on all trims of the 1997 Civic DX.
* Check your car's documentation: The best way to know is to look at your owner's manual or check the vehicle's original window sticker.
* Look for a power steering pump: You can also check under the hood for a power steering pump (a cylindrical component with belts attached).
Let me know if you have any other information about your specific vehicle, and I might be able to give you a more definite answer.