Change the css code to control Adjust image?

I know where to insert image address and indeed upload an image in the image area.
but I want to know, after the image appears, does it can be adjusted by changing css code directly?
Does it affect the format of the image data?
Insert the image below:

format: PNG


What is your question exactly? What do you mean with image address?


You can change the image by using CSS or HTML, but you can only change size, transparency, border, or link using these things… you can’t change the color or anything like that. You could also probably change the background color if it is transparent.

You can find everything you need here: