I'm lazy nothing very much to learn very much Google search kada is taster
var scroll = 0;
$(window).on("scroll", function(){
scroll = window.pageYOffset || (document.documentElement.clientHeight ? document.documentElement.scrollTop : document.body.scrollTop);
if ($(".your_element").css("display") === "none" && scroll > 1200) { // 1200 - "a certain pixel"
$(".your_element").fadeIn();
}
});
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