/* pulse */
@keyframes pulse_animation{
    0% {
        box-shadow: 0 0 0 0 rgba(0, 0, 0, .5);
    }
    100% {
        box-shadow: 0 0 0 40px rgba(0, 0, 0, 0);
    }
}

/* menu */
@keyframes dropdown_menu{
	from {
		transform: translateY(-1rem);
	}
	to {
		transform: translateY(0);
	}
}