Яхья

var mySwiper = new Swiper('.swiper-container-s1', {
		...
	});
var mySwiper2 = new Swiper('.swiper-container-s2', {
		....
	});

html,body{
	height:1500px;
}
#div{
	margin-top:200px;
	padding:30px;
	background:#ee0;
	border-radius:4px;
}
.back{
	position:fixed;
	top:0; left:0;
	margin-top: 0 !important;
	width:100%;
	background-color:#cc0 !important;
}

$(window).scroll(function() {
	body = $(window).scrollTop();
	if(body > 200){
	$("#div").addClass('back');
	}else{
		$("#div").removeClass('back');
	}
});

.size-full{
max-width:100%;
width:auto
}