Need some assistance to understand animation

Hi, I watched your video for the Scrollsequence Watch Example Tutorial think I understand most of it. I don’t have coding skills and not sure about css classes or IDs. Instead of a heading I want to use an image. It’s like an icon to indicate that the user should scroll down. I’ll be using a png file and would like the image to fade-in then out, I saw the drop-down menu to select those options. I understand I can set the entrance and exit at my desired frame number, I just need some help in setting it up as far as what class or ID. My guess is something as simple as ” .image ” ? Is there anything else I should add, any other code snippets? What about the positioning, and is that responsive? I tried to use a widget as my first option but, for some reason the vh wasn’t being applied correctly, probably because of he length of the sequence, and when I tried to edit in laptop an tablet mode I couldn’t get the correct height positioning across different device sizes. positioning for 1536 X 864 for example, would be fine, but the image would be hidden viewing on a 1366 X 768 screen. Not to mention an Ipad Pro 12.9″ where the image would be closer to the middle of the screen. Thanks and best regards.