function explainCount(txt) {
	layer.open({
		type: 1,
		title: false,//不显示标题栏
		closeBtn: false,
		area: '400px;',
		shade: 0.8,
		id: 'LAY_layuipro',//设定一个id，防止重复弹出
		btn: ['已知晓'],
		btnAlign: 'c',
		moveType: 1,//拖拽模式，0或者1
		content: '<div style="padding: 50px; line-height: 22px; background-color: #393D49; color: #fff; font-weight: 300;">' +txt + '</div>',
		success: function(layero) {
			var btn = layero.find('.layui-layer-btn');
			btn.find('.layui-layer-btn0').attr({
				target: '_blank'
			});
		}
	});
}