In this pure CSS snippet by Matthias Ott we see how to add a nice little pulsating effect to a hotspot on an image. This call to action element can be used to draw the visitors’ attention to a specific section on the image. The hotspot has a nice ring that radiated out every few seconds and it stops when you hover over the hotspot.
If you are having trouble with the pen, try the archived copy on GitHub
See the Pen Pulsating Hotspot UI Element by Matthias Ott (@matthiasott) on CodePen.0