Why is there a black border when I press the keyboard

[bo88430]

Where does this black border come from when I click on the dom and I press the keyboard and it comes up, and Google Chrome has this problem

[bo88430]

[mruac]

Can you provide a replicable JSFiddle or similar?
I feel like this is something related to your system's keyboard navigation highlight.

[mruac]

Figured it out - try this CSS:

*:focus-visible {
  outline: none;
}

[bo88430]

Thank you very much, we changed the version of Google Chrome to solve the problem, but it is best to use your way.