you can use jquery Pulsate plugin to force to focus the attention on any html element with control over speed and repeatation and color.
https://kilianvalkhofJQuery.com/jquerypulsatepulsate() (with Demos)* with Demos
sample initializer:
- $(".pulse4").pulsate({speed:2500})
- $(".CommandBox button:visible").pulsate({ color: "#f00", speed: 200, reach: 85, repeat: 15 })