If your graphic (in a topper) overlaps the line beneath it, change the number (higher). The higher the number means the more 'space' between your Topper and the 'google search' box.
For an example, I've set the video in BOOKS to 'autoplay'.
I just had to remind myself how to set Chrome to 'allow' Autoplay on videos. Here's the info:
http://notoverthehill.com/forums/display_group_topic/id_124440/
REMINDER: If you don't 'set' a Signature, then whatever is in your Headline area will show up in forum posts as signature!