The variable name has to follow the same naming convention as previously explained, in that it has to consist of the same root name, in this case banner, followed by an integer starting from 1 and increasing in numerical order.
As before, I have added a separator with a period ., just to make the variables easier to read.
The rest of the code is just standard HTML for displaying an image linked to a URL.
You can adjust it to suit.
Again, you will need to upload the banner images to the server and then define the path in the code.
For this example we're going to implement three different banner images, so the code looks like this: