I would like to scroll to the bottom of the div content-main, so that the button Button is displayed at the bottom of the window. I tried the following:  
<div class="container">
    <div class="content-main">
    dynamic content dynamic content.....  
    <button>Button </button>
    </div>
    <div class ="footer"></div>
</div>
<script>
    var mainContentHeight = $(".content-main").height();
    var footerHeight = $(".content-footer").height();
    window.scrollTo(0, mainContentHeight - footerHeight);
</script>
This works differently, when I test it in two monitors with different size. How to display the button at the bottom of the window?
 
     
    