Remove Blue Border On Click Button

When designing website forms, you will come across a nasty default border being generated when a button is clicked. This is because, by default, an outline or border is present when a button receives a focus state. This can be removed by simply adding the following CSS code.

/**
 Remove focused button styles when an element received focus
 via mouse click or touch.
 */
 *:focus:not(:focus-visible) {
 outline: 0 !important;
 box-shadow: none !important;
 }