Cameron Jones

Fluid Customizer is a simple plug-and-play plugin which allows you to resize the width of the preview window in the Customizer to whichever size you like. Simply install the plugin, go to your Customizer, then click and drag the right border of the sidebar and watch the magic happen!

Fluid Customizer

Preview your site for a variety of different devices by resizing your Customizer sidebar with a simple click and drag

Brian Harris

This plugin adds support for the Twenty Fourteen theme to the <a href="https://wordpress.org/extend/plugins/styles">Styles plugin</a>.
Features of the plugin
<ul>
<li>Instant previews</li>
<li>Text size</li>
<li>Google Fonts</li>
<li>Text colors</li>
<li>Border colors</li>
<li>Background colors</li>
<li>Hundreds of options</li>
<li>Consistent interface and names in every theme</li>
<li>Built on WordPress customizer, so Styles grows as WordPress grows</li>
</ul>
Styles and options for all built-in WordPress themes are free. More themes are available at <a href="http://stylesplugin.com" rel="nofollow ugc">StylesPlugin.com</a>.
Contact
<ul>
<li><a href="http://wpdefault.com/forums/forum/styles-twentyfourteen/" rel="nofollow ugc">Get support</a></li>
</ul>

Styles: TwentyFourteen

Be creative with colors and fonts. Styles changes everything.

Fluid Customizer vs Styles: TwentyFourteen