The hotspot annotation has a blue outline appear when a viewer hovers over it by default.  

If you would like to remove this blue outline for one project simply paste this into Configure / Custom Annotation CSS URL

//hapyak_demos.s3.amazonaws.com/css/customer/invisible_hotspot.css

If you would like to remove this blue outline for all projects simply go to Group Settings / Style Builder and set Hotspot opacity to 0.

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