Here be a sample post with a custom background image. To utilize this "feature" just add the following YAML to a post's front matter.

image:
  background: filename.png

This little bit of YAML makes the assumption that your background image asset is in the /images folder. If you place it somewhere else or are hotlinking from the web, just include the full http(s):// URL. Either way you should have a background image that is tiled.

If you want to set a background image for the entire site just add background: filename.png to your _config.yml and BOOM --- background images on every page!

Syntax highlighting is a feature that displays source code, in different colors and fonts according to the category of terms. This feature facilitates writing in a structured language such as a programming language or a markup language as both structures and syntax errors are visually distinct. Highlighting does not affect the meaning of the text itself; it is intended only for human readers.

Pygments Code Blocks

To modify styling and highlight colors edit /assets/less/pygments.less and compile main.less with your favorite preprocessor. Or edit main.css if that's your thing, the classes you want to modify all begin with .highlight.

#container {
    float: left;
    margin: 0 -240px 0 0;
    width: 100%;
}

Line numbering enabled:

<nav class="pagination" role="navigation">
    {% if page.previous %}
        <a href="{{ site.url }}{{ page.previous.url }}" class="btn" title="{{ page.previous.title }}">Previous article</a>
    {% endif %}
    {% if page.next %}
        <a href="{{ site.url }}{{ page.next.url }}" class="btn" title="{{ page.next.title }}">Next article</a>
    {% endif %}
</nav><!-- /.pagination -->

module Jekyll
  class TagIndex < Page
    def initialize(site, base, dir, tag)
      @site = site
      @base = base
      @dir = dir
      @name = 'index.html'
      self.process(@name)
      self.read_yaml(File.join(base, '_layouts'), 'tag_index.html')
      self.data['tag'] = tag
      tag_title_prefix = site.config['tag_title_prefix'] || 'Tagged: '
      tag_title_suffix = site.config['tag_title_suffix'] || '&#8211;'
      self.data['title'] = "#{tag_title_prefix}#{tag}"
      self.data['description'] = "An archive of posts tagged #{tag}."
    end
  end
end

Standard Code Block

<nav class="pagination" role="navigation">
    {% if page.previous %}
        <a href="{{ site.url }}{{ page.previous.url }}" class="btn" title="{{ page.previous.title }}">Previous article</a>
    {% endif %}
    {% if page.next %}
        <a href="{{ site.url }}{{ page.next.url }}" class="btn" title="{{ page.next.title }}">Next article</a>
    {% endif %}
</nav><!-- /.pagination -->

Fenced Code Blocks

To modify styling and highlight colors edit /assets/less/coderay.less and compile main.less with your favorite preprocessor. Or edit main.css if that's your thing, the classes you want to modify all begin with .coderay. Line numbers and a few other things can be modified in _config.yml under coderay.

#container {
    float: left;
    margin: 0 -240px 0 0;
    width: 100%;
}

<nav class="pagination" role="navigation">
    {% if page.previous %}
        <a href="{{ site.url }}{{ page.previous.url }}" class="btn" title="{{ page.previous.title }}">Previous article</a>
    {% endif %}
    {% if page.next %}
        <a href="{{ site.url }}{{ page.next.url }}" class="btn" title="{{ page.next.title }}">Next article</a>
    {% endif %}
</nav><!-- /.pagination -->

module Jekyll
  class TagIndex < Page
    def initialize(site, base, dir, tag)
      @site = site
      @base = base
      @dir = dir
      @name = 'index.html'
      self.process(@name)
      self.read_yaml(File.join(base, '_layouts'), 'tag_index.html')
      self.data['tag'] = tag
      tag_title_prefix = site.config['tag_title_prefix'] || 'Tagged: '
      tag_title_suffix = site.config['tag_title_suffix'] || '&#8211;'
      self.data['title'] = "#{tag_title_prefix}#{tag}"
      self.data['description'] = "An archive of posts tagged #{tag}."
    end
  end
end

GitHub Gist Embed

An example of a Gist embed below.

<script src="https://gist.github.com/mmistakes/6589546.js"></script>

<script src="https://gist.github.com/8531391.js"></script>

This theme supports link posts, made famous by John Gruber. To use, just add link: http://url-you-want-linked to the post's YAML front matter and you're done.

Video embeds are responsive and scale with the width of the main content block with the help of FitVids.

Not sure if this only effects Kramdown or if it's an issue with Markdown in general. But adding YouTube video embeds causes errors when building your Jekyll site. To fix add a space between the <iframe> tags and remove allowfullscreen. Example below:

<iframe width="560" height="315" src="//www.youtube.com/embed/SU3kYxJmWuQ" frameborder="0"> </iframe>

This is a sample post with a large feature image up top and tons of text. Odio ad blue bottle vinyl, 90's narwhal commodo bitters pour-over nostrud. Ugh est hashtag in, fingerstache adipisicing laboris esse Pinterest shabby chic Portland. Shoreditch bicycle rights anim, flexitarian laboris put a bird on it vinyl cupidatat narwhal. Hashtag artisan skateboard, flannel Bushwick nesciunt salvia aute fixie do plaid post-ironic dolor McSweeney's. Cliche pour-over chambray nulla four loko skateboard sapiente hashtag.

Vero laborum commodo occupy. Semiotics voluptate mumblecore pug. Cosby sweater ullamco quinoa ennui assumenda, sapiente occupy delectus lo-fi. Ea fashion axe Marfa cillum aliquip. Retro Bushwick keytar cliche. Before they sold out sustainable gastropub Marfa readymade, ethical Williamsburg skateboard brunch qui consectetur gentrify semiotics. Mustache cillum irony, fingerstache magna pour-over keffiyeh tousled selfies.

Cupidatat 90's lo-fi authentic try-hard

In pug Portland incididunt mlkshk put a bird on it vinyl quinoa. Terry Richardson shabby chic +1, scenester Tonx excepteur tempor fugiat voluptate fingerstache aliquip nisi next level. Farm-to-table hashtag Truffaut, Odd Future ex meggings gentrify single-origin coffee try-hard 90's.

• Sartorial hoodie
• Labore viral forage
• Tote bag selvage
• DIY exercitation et id ugh tumblr church-key

Incididunt umami sriracha, ethical fugiat VHS ex assumenda yr irure direct trade. Marfa Truffaut bicycle rights, kitsch placeat Etsy kogi asymmetrical. Beard locavore flexitarian, kitsch photo booth hoodie plaid ethical readymade leggings yr.

Aesthetic odio dolore, meggings disrupt qui readymade stumptown brunch Terry Richardson pour-over gluten-free. Banksy american apparel in selfies, biodiesel flexitarian organic meh wolf quinoa gentrify banjo kogi. Readymade tofu ex, scenester dolor umami fingerstache occaecat fashion axe Carles jean shorts minim. Keffiyeh fashion axe nisi Godard mlkshk dolore. Lomo you probably haven't heard of them eu non, Odd Future Truffaut pug keytar meggings McSweeney's Pinterest cred. Etsy literally aute esse, eu bicycle rights qui meggings fanny pack. Gentrify leggings pug flannel duis.

Forage occaecat cardigan qui

Fashion axe hella gastropub lo-fi kogi 90's aliquip +1 veniam delectus tousled. Cred sriracha locavore gastropub kale chips, iPhone mollit sartorial. Anim dolore 8-bit, pork belly dolor photo booth aute flannel small batch. Dolor disrupt ennui, tattooed whatever salvia Banksy sartorial roof party selfies raw denim sint meh pour-over. Ennui eu cardigan sint, gentrify iPhone cornhole.

Whatever velit occaecat quis deserunt gastropub, leggings elit tousled roof party 3 wolf moon kogi pug blue bottle ea. Fashion axe shabby chic Austin quinoa pickled laborum bitters next level, disrupt deep v accusamus non fingerstache.

Tote bag asymmetrical elit sunt. Occaecat authentic Marfa, hella McSweeney's next level irure veniam master cleanse. Sed hoodie letterpress artisan wolf leggings, 3 wolf moon commodo ullamco. Anim occupy ea labore Terry Richardson. Tofu ex master cleanse in whatever pitchfork banh mi, occupy fugiat fanny pack Austin authentic. Magna fugiat 3 wolf moon, labore McSweeney's sustainable vero consectetur. Gluten-free disrupt enim, aesthetic fugiat jean shorts trust fund keffiyeh magna try-hard.

Hoodie Duis

Actually salvia consectetur, hoodie duis lomo YOLO sunt sriracha. Aute pop-up brunch farm-to-table odio, salvia irure occaecat. Sriracha small batch literally skateboard. Echo Park nihil hoodie, aliquip forage artisan laboris. Trust fund reprehenderit nulla locavore. Stumptown raw denim kitsch, keffiyeh nulla twee dreamcatcher fanny pack ullamco 90's pop-up est culpa farm-to-table. Selfies 8-bit do pug odio.

Thundercats Ho!

Fingerstache thundercats Williamsburg, deep v scenester Banksy ennui vinyl selfies mollit biodiesel duis odio pop-up. Banksy 3 wolf moon try-hard, sapiente enim stumptown deep v ad letterpress. Squid beard brunch, exercitation raw denim yr sint direct trade. Raw denim narwhal id, flannel DIY McSweeney's seitan. Letterpress artisan bespoke accusamus, meggings laboris consequat Truffaut qui in seitan. Sustainable cornhole Schlitz, twee Cosby sweater banh mi deep v forage letterpress flannel whatever keffiyeh. Sartorial cred irure, semiotics ethical sed blue bottle nihil letterpress.

Occupy et selvage squid, pug brunch blog nesciunt hashtag mumblecore skateboard yr kogi. Ugh small batch swag four loko. Fap post-ironic qui tote bag farm-to-table american apparel scenester keffiyeh vero, swag non pour-over gentrify authentic pitchfork. Schlitz scenester lo-fi voluptate, tote bag irony bicycle rights pariatur vero Vice freegan wayfarers exercitation nisi shoreditch. Chambray tofu vero sed. Street art swag literally leggings, Cosby sweater mixtape PBR lomo Banksy non in pitchfork ennui McSweeney's selfies. Odd Future Banksy non authentic.

Aliquip enim artisan dolor post-ironic. Pug tote bag Marfa, deserunt pour-over Portland wolf eu odio intelligentsia american apparel ugh ea. Sunt viral et, 3 wolf moon gastropub pug id. Id fashion axe est typewriter, mlkshk Portland art party aute brunch. Sint pork belly Cosby sweater, deep v mumblecore kitsch american apparel. Try-hard direct trade tumblr sint skateboard. Adipisicing bitters excepteur biodiesel, pickled gastropub aute veniam.