jQuery or CSS Animate - HTML Element moves down on scroll -


i'm trying set timeline, marker moves user scrolls down. i've set code follows:

html

<div class="boxone"></div> <div class="boxtwo"><div class="animatedcircle"></div></div>

css

.boxone {   width: 400px;   height: 4000px;   background: red;   float: left; }  .boxtwo {   width: 400px;   height: 4000px;   background: blue;   border-left: 1px solid black;   float: left; }  .animatedcircle {   border: 1px solid black;   width: 25px;   height: 25px;   border-radius: 40px;   position: absolute;   right: 403px;   top: 50px; }

jquery

$(document).ready(function () {  var el = $('.animatedcircle');     var originalelpos = el.offset().top; // take on page      //run on scroll     $(window).scroll(function () {         var el = $('.animatedcircle'); // important! (local)         var elpos = el.offset().top; // take current situation         var windowpos = $(window).scrolltop();         var finaldestination = windowpos + originalelpos;         el.stop().animate({ 'top': finaldestination }, 400);     }); });

http://codepen.io/elainem/pen/tiyhb

how go animating marker move down when scroll down?

you mean circle? if yes, change .animatedcircle position fixed.


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