Animated scrolling

scrolling.js

// Scrolling
function scrollToElement(element, offset) {
    var offsetTop = $(element).offset().top;
    if (arguments.length === 2) {
        offsetTop += offset;
    }
    $('html, body').animate({ scrollTop: offsetTop }, 500);
}

// Scroll to content
$('.js-scroll').click(function(e) {
    e.preventDefault();
    scrollToElement($(this).attr('href'), -40);
});