Go Top Sticky button

gotop.css

/* Go Top */
.go-top {
    position: fixed;
    bottom: 2em;
    right: 2em;
    text-decoration: none;
    color: white;
    background-color: #f6f6f6;
    background-color: rgba(0, 0, 0, 0.3);
    font-size: 12px;
    padding: 18px;
    border-radius: 3px;
    display: none;
    -webkit-transition: all 0.3s ease-out;
    -moz-transition: all 0.3s ease-out;
    -o-transition: all 0.3s ease-out;
    transition: all 0.3s ease-out;
}

.go-top:hover {
    background-color: rgba(0, 0, 0, 0.6);
}

.go-top i {
    height: 0;
    width: 0;
    position: absolute;
    top: 9px;
    left: 8px;
    border-bottom: 17px solid white;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
}

gotop.html

<a href="#" class="go-top"><i></i></a>

gotop.js

// Source: http://webdesign.tutsplus.com/tutorials/htmlcss-tutorials/quick-tip-implement-a-sticky-back-to-top-button/

/* Stiky GOTO Top 
     ======================================================================= */

    // Show or hide the sticky footer button
    $(window).scroll(function() {
        if ($(this).scrollTop() > 200) {
            $('.go-top').fadeIn(600);
        } else {
            $('.go-top').fadeOut(600);
        }
    });

    // Animate the scroll to top
    $('.go-top').click(function(event) {
        event.preventDefault();

        $('html, body').animate({scrollTop: 0}, 300);
    })