JSFiddle - React, Tailwind, and code Playground
HTML
<body>
<div class="item">pi ali waso sewi sijelo, li suwi anpa kalama ale. ike n prep sama sijelo, monsi nanpa sitelen mi ike. lipu kute telo ko ijo, e ali taso poki. ken ko sike nanpa. ike o luka suli. unpa kiwen uta a.pi ali waso sewi sijelo, li suwi anpa kalama ale. ike
n prep sama sijelo, monsi nanpa sitelen mi ike. lipu kute telo ko ijo, e ali taso poki. ken ko sike nanpa. ike o luka suli. unpa kiwen uta a.</div>
<div class="item">
<div class="item_2"> ewrwwe</div>
pi ali waso sewi sijelo, li suwi anpa kalama ale. ike n prep sama sijelo, monsi nanpa sitelen mi ike. lipu kute telo ko ijo, e ali taso poki. ken ko sike nanpa. ike o luka suli. unpa kiwen uta a.pi ali waso sewi sijelo, li suwi anpa kalama ale. ike n
prep sama sijelo, monsi nanpa sitelen mi ike. lipu kute telo ko ijo, e ali taso poki. ken ko sike nanpa. ike o luka suli. unpa kiwen uta a.</div>
<div class="item">pi ali waso sewi sijelo, li suwi anpa kalama ale. ike n prep sama sijelo, monsi nanpa sitelen mi ike. lipu kute telo ko ijo, e ali taso poki. ken ko sike nanpa. ike o luka suli. unpa kiwen uta a.pi ali waso sewi sijelo, li suwi anpa kalama ale. ike
n prep sama sijelo, monsi nanpa sitelen mi ike. lipu kute telo ko ijo, e ali taso poki. ken ko sike nanpa. ike o luka suli. unpa kiwen uta a.</div>
<div class="item">pi ali waso sewi sijelo, li suwi anpa kalama ale. ike n prep sama sijelo, monsi nanpa sitelen mi ike. lipu kute telo ko ijo, e ali taso poki. ken ko sike nanpa. ike o luka suli. unpa kiwen uta a.pi ali waso sewi sijelo, li suwi anpa kalama ale. ike
n prep sama sijelo, monsi nanpa sitelen mi ike. lipu kute telo ko ijo, e ali taso poki. ken ko sike nanpa. ike o luka suli. unpa kiwen uta a.</div>
<div class="item">pi ali waso sewi sijelo, li suwi anpa kalama ale. ike n prep sama sijelo, monsi nanpa sitelen mi ike. lipu kute telo ko ijo, e ali taso poki. ken ko sike nanpa. ike o luka suli. unpa kiwen uta a.pi ali...
CSS
div.item {
margin-top: 50px;
border: 1px black solid;
height: 300px;
}
JavaScript
var body = $("html, body");
var items = $(".item");
var animating = false;
$(window).scroll(function() {
clearTimeout($.data(this, 'scrollTimer'));
if (!animating) {
$.data(this, 'scrollTimer', setTimeout(function() {
items.each(function(key, value) {
if (elementInViewport(value)) {
animating = true;
var margin = parseInt($(value).css('margin-top'));
$('html,body').animate({
scrollTop: $(value).offset().top - ($(window).height() + margin - $(value).outerHeight(true)) / 2
}, 200);
setTimeout(function() {
animating = false;
}, 2000);
return false;
}
});
}, 50));
}
});
function elementInViewport(el) {
var top = el.offsetTop;
var left = el.offsetLeft;
var width = el.offsetWidth;
var height = el.offsetHeight;
while (el.offsetParent) {
el = el.offsetParent;
top += el.offsetTop;
left += el.offsetLeft;
}
return (
top < (window.pageYOffset + window.innerHeight) &&
left < (window.pageXOffset + window.innerWidth) &&
(top + height) > window.pageYOffset &&
(left + width) > window.pageXOffset
);
}