Cómo deshacerse del contorno del botón cuando se hace clic
*:focus {
outline: 0 !important;
}
Delightful Dunlin
*:focus {
outline: 0 !important;
}.btnName{
outline: none;
}.x-btn:focus, .button:focus, [type="submit"]:focus {
outline: none;
}<button style="outline: none;"></button>using outline:none; we can remove that border in chrome
for tailwind css :
outline-none
focus:outline-none