A hotspot is an invisible or translucent rectangle you place over an element in the video. It's used for making elements that are already in the video file itself interactive. A hotspot is especially useful if you add all your graphics and text in Avid, Premiere. AfterEffects, Motion, etc...
To add a Hotspot, click the mouse icon.
While editing the Hotspot has a handy light grey outline that helps you position it. That disappears when you are in "view" mode or when your viewers watch the video.
Completely Invisible Hotspot
When a viewer hovers over the the hotspot annotation, a blue outline appears over it by default.
If you would like to remove this blue outline for all projects simply go to Group Settings / Style Builder, click "Edit Existing" and set Hotspot opacity to 0.
If you would like to remove this blue outline for one project simply paste this into Settings / Custom Annotation CSS URL