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HTML 

              
                <div style="height:400px;"></div>
<button type="button" class="openner">팝업 열기</button>
	<div class="evn-images"><img src="https://image.ytn.co.kr/osen/2016/12/20161209_1481283268_75611600_1.jpg" alt="도깨비" /></div>
<div style="height:400px;"></div>
!

CSS 

              
                body { font-family:sans-serif; }
.dimm { position:fixed; left:0; right:0; top:0; bottom:0; height:100%; overflow:hidden; z-index:1; }
.dimm > .spread { position:fixed; left:0; right:0; top:0; bottom:0; background-color:rgba(0,0,0,.5); overflow:hidden; z-index:100; 
	-webkit-animation-duration:.5s; 
	-webkit-animation-timing-function:cubic-bezier(0.18, 0.89, 0.32, 1.28); 
	-webkit-animation-name:dim; 
	animation-duration:.5s; 
	animation-timing-function:cubic-bezier(0.18, 0.89, 0.32, 1.28); 
	animation-name:dim; 
}
.openner { height:50px; font-size:16px; color:#ffffff; border:none; background-color:#334150; z-index:10; }
.evn-images > img { max-width:100%; }
.evn-popup { display:none; position:fixed; left:20px; right:20px; top:100px; bottom:100px; padding:20px; border-radius:10px; background-color:#ffffff; z-index:101; overflow:hidden; overflow-y:auto;
	-webkit-overflow-scrolling:auto;
}
.evn-popup > div { margin:100px 0 0; line-height:200%; }
.evn-popup > div:first-child { margin:0; }
.evn-popup > button { position:static; }
.dimm .evn-popup { display:block; }
.log { position:fixed; left:0; right:0; bottom:0; font-size:11px; line-height:200%; color:#ffffff; text-align:center; background-color:#000000; z-index:1000; }
@keyframes dim { 
	from {
		opacity:0;
	}
	to{
		opacity:1;
	}
}
!

JS 

              
                $(function(){
	$('.openner').on('click',function(event){
		event.stopPropagation();
		var currentTop = $('body').scrollTop();
		$('body').addClass('dimm').css('top',-currentTop);
		$('.dimm').prepend('<div class="spread"></div>');

		// 팝업 생성
		if($('.dimm').length > 0){
			var layerPopup = '<div class="evn-popup">';
			layerPopup += '	<div>1. 동해 물과 백두산이 마르고 닳도록 하느님이 보우하사 우리나라 만세 무궁화 삼천리 화려강산 대한사람 대한으로 길이 보전하세</div>';
			layerPopup += '	<div>2. 남산 위에 저 소나무 철갑을 두른듯 바람서리 불변함은 우리 기상일세 무궁화 삼천리 화려강산 대한사람 대한으로 길이 보전하세</div>';
			layerPopup += '	<div>3. 가을 하늘 공활한데 높고 구름없이 밝은 달은 우리가슴 일편단심일세 무긍화 삼천리 화려강산 대한사람 대한으로 길이 보전하세</div>';
			layerPopup += '	<div>4. 이 기상과 이맘으로 충성을 다하여 괴로우나 즐거우나 나라사랑하세 무궁화 삼천리 화려강산 대한사람 대한으로 길이 보전하세</div>';
			layerPopup += '	<button type="button" class="closer">팝업 닫기</button>';
			layerPopup += '</div>';
			$('body').append(layerPopup);
		}
		if($('.dimm').attr('data-scroll')==undefined) $('.dimm').attr('data-scroll',currentTop);

		//레이어 호출시 액션
		$('.closer, .spread').on('click',function(){
			$('.dimm').removeAttr('style');
			$('.dimm').find('.spread').remove();
			$('.dimm').removeClass('dimm').scrollTop($('body').attr('data-scroll')).removeAttr('data-scroll');
			if($('.evn-popup').length>0){
				$('.evn-popup').hide().remove();
			}
		});
	});	
});
!
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