How to make a 'dot' border appear after clicking a button

This time I will show you how to make thebuttonappear with a "dot" border after clicking it, andwhat are the precautions, the following are Let’s take a look at practical cases.

// A input { 　　outline: none; } // B Input::-moz-focus-inner { 　　border: none; } //加了ouline没用，别死磕，重启

I believe you have mastered the methods after reading these cases. For more exciting information, please pay attention to other related articles on the php Chinese website!

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