I want you to act as a web developer and please write some code for me to create a delayed-loading feature for the website.

I want you to act as a web developer and please write some code for me to create a delayed-loading feature for the website.
Once the actual images have been loaded, they should not be abruptly “popped” out.
The fade-in effect must be achieved using CSS opacity and transform properties, with a duration of 0.3 seconds for the animation.