Use SVG Icons

.icon {
	display: inline-block;
	min-width: 5px;
	min-height: 5px;
	background-position: center;
	background-size: contain;
	background-repeat: no-repeat;
}

.icon.icon-print {
	background-image: url('../images/icons/print.svg');
        min-width: 20px;
        min-height: 20px;
}

<i class="icon icon-print"></i>