How would the customer edit the website you've sold to him?

Question

I am pretty sure that in one month, I can create a website semi to professional with really good design, functionality and security. I have made quite a few researches and I have found websites where I can advertise my own website and sell it. However, I still have some hesitation:

What risk do I take selling a website?

Related to the first question, I've got a second question:

How would the customer edit the website you've sold to him?

As I sold a website and not a CMS, the customer will have to edit the code if he want to do some updates. How could I make it easy for him to add the content he wants to the website?

Answer 1

There's two ways to go here that I'm aware of:

Option #1:

Build CMS functionality into the site, so if a header needs to be updated, provide a control for doing that.

Option #2:

You provide maintenance and do the updates for a fee.