.loading::after {
	display: inline-block;
	animation: dotty steps(1,end) 1s infinite;
	content: '';
}

@keyframes dotty {
	0%   { content: ''; }
	25%  { content: '.'; }
	50%  { content: '..'; }
	75%  { content: '...'; }
	100% { content: ''; }
}