x-modal {
	display: block;
	position: fixed;
	top: 50%;
	left: 50%;
	
	box-sizing: border-box;
	-o-box-sizing: border-box;
	-ms-box-sizing: border-box;
	-moz-box-sizing: border-box;
	-webkit-box-sizing: border-box;
	
	transform: translate(-50%, -50%);
	-o-transform: translate(-50%, -50%);
	-ms-transform: translate(-50%, -50%);
	-moz-transform: translate(-50%, -50%);
	-webkit-transform: translate(-50%, -50%);
}

x-modal[data-modal-hidden="true"]{
	display: none;
}