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              <header class="site-header">
  <h2 class="title">Sticky Navigation</h2>
  <p>Proceed to scroll down, please.</p>
  <span class="arrow">&downarrow; </span>
<nav class="navbar">
  <div class="container">
    <a href="#" class="brand">Sticky Navigation</a>
    <ul class="nav">
      <li><a href="#">Link 1</a></li>
      <li><a href="#">Link 2</a></li>
      <li><a href="#">Link 3</a></li>
      <li><a href="#">Link 4</a></li>
<div class="main">
  <div class="container">
    <h2>Let Thou Stick To Top.</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Soluta similique animi dolorum earum repellendus tempora quisquam porro autem ea hic libero error fuga facilis dolore quas odio ducimus sequi adipisci mollitia ipsa impedit! Officiis magnam laborum impedit molestiae neque possimus veniam expedita accusantium excepturi ipsam voluptatum eos repellendus doloremque voluptate doloribus commodi explicabo distinctio ducimus nemo ad perspiciatis quas dicta ipsum. Ad hic repellat a architecto eaque commodi labore cupiditate corporis quibusdam porro magnam obcaecati excepturi ipsa mollitia debitis eligendi provident consequatur. Molestiae tenetur nihil quam possimus nesciunt doloribus voluptas ipsum officiis expedita commodi tempore in atque quaerat illo alias.</p>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Sit enim maxime sapiente quibusdam nulla perspiciatis quas odit et reprehenderit impedit veritatis eius natus ipsum eos dolorum! Fugit quo quibusdam possimus! Consequuntur ratione dolor provident non labore eius. Unde quos facere. Commodi eaque voluptatibus inventore veniam eum totam quaerat. Voluptas suscipit.</p>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Veniam earum odio alias doloremque voluptatum error. Vitae nam porro voluptatum quibusdam nulla quaerat deleniti deserunt incidunt repellendus veritatis doloribus voluptate maxime quidem aliquid natus obcaecati reprehenderit cum reiciendis explicabo commodi numquam sapiente magnam. Ipsam et aliquam veniam sit inventore unde asperiores. Voluptatibus nemo officiis animi ducimus maiores voluptates cupiditate sapiente ut optio necessitatibus placeat deserunt assumenda molestias quas aliquam fuga quod nostrum incidunt mollitia quia at.</p>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Et autem tenetur reprehenderit ipsam cupiditate repellat deserunt sint quae quas quod quibusdam iure in minus veritatis magni nesciunt sed aliquid harum?</p>
              @import "compass/css3";

$base__font-family: "Helvetica", Sans-serif;
$base__font-size: 16;
$base__line-height: 1.6;

$heading__font-family: 'Droid Sans', 'sans-serif';

// Convert px to em
@function em($px, $base: $base__font-size) {
  @return ($px / $base) * 1em;

// Keyframe mixin
@mixin keyframe ($animation_name) {
    @-webkit-keyframes $animation_name {
    @-moz-keyframes $animation_name {
    @keyframes $animation_name {

@mixin text($family: $base__font-family, $weight: normal, $size: $base__font-size) {
  font-family: $family;
  font-weight: $weight;
  font-size: em($size);

@mixin clearfix() {
  &:after {
    content: "";
    display: table;
    clear: both;

*:after {
  margin: 0;
  @include box-sizing(border-box);

a {
  text-decoration: none;
  color: darken(#fff, 5%);

body {
  padding-top: 570px;
  @include text();
  line-height: $base__line-height;

.site-header {
  height: 800px;
  padding-top: 230px;
  text-align: center;
  background-color: #e67e22;
  color: darken(#fff, 5%);
  z-index: 1;
  h2 { 
    @include text($heading__font-family,700,40);
    letter-spacing: 5px;
    text-transform: uppercase;
  p { letter-spacing: 2px; }

.navbar {
  // Adding margin-bottom eliminates the odd jumpy behavior.
  margin-bottom: -85px; 
  padding: 30px 0;
  text-transform: uppercase;
  background-color: #1d1f20;
  //background-color: rgba(29, 31, 32,.9);
  z-index: 3;
  @include clearfix;

.nav {
  padding: 0;
  float: right;
  li {
    padding-right: 20px;
    display: inline;
    &:last-child { padding-right: 0; }

.navbar { 
  position: relative; 

.nav--scrolled {
  position: fixed;
  width: 100%;
  top: 0;

.brand {
  @include text($heading__font-family);
  letter-spacing: 5px;
  color: #fff;
  position: relative;
  float: left;

.container {
  width: 90%;
  max-width: 960px;
  margin: auto;

.main {
  padding: 100px 0;
  background-color: #ecf0f1;
  z-index: 2; 
  p { 
    margin-bottom: 40px;
    font-size: em(18);

.arrow {
  font-size: em(20);
  display: block;

.bounce {
  -webkit-animation: bounce .5s infinite ease-in-out;
  animation: bounce .5s infinite ease-in-out;

@include keyframe(bounce) {
  0%, 100% { @include transform(translateY(5px)); }
  50% { @include transform(translateY(0)); }
              (function ($) {
  "use strict"
  var $window;
  function stickyNavigation () {
    var $this = $(this),
        navScrolled = "nav--scrolled",
        siteHeader = $('.site-header').height(),
        navbar = $('.navbar');
    if($this.scrollTop() > siteHeader) {
    } else {
  $(function () {
    var $window = $(window);

/* old way
$(function() {
  var ns = "nav--scrolled",
      sh = $('.site-header').height(),
      navbar = $('.navbar');
  $(window).scroll(function() {
    if( $(this).scrollTop() > sh ) {
    } else {
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