Embed Notice

Do you remember, several decades ago, when icons, buttons, logos, smileys.. were all stored in a unique gif or png image on your website ?
This image was cut by background-image css rules to extract elements from it with position, height, width and shifting. So, there were only one request to the server to grab all the design elements.
That was funny and tricky to do.
I wonder if some sites still works that way 🤔