Previous button float left

Fixes #621

Author: Blendify

sphinx_rtd_theme/footer.html

@@ -5,7 +5,7 @@
         <a href="{{ next.link|e }}" class="btn btn-neutral float-right" title="{{ next.title|striptags|e }}" accesskey="n" rel="next">{{ _('Next') }} <span class="fa fa-arrow-circle-right"></span></a>
       {% endif %}
       {% if prev %}
-        <a href="{{ prev.link|e }}" class="btn btn-neutral" title="{{ prev.title|striptags|e }}" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> {{ _('Previous') }}</a>
+        <a href="{{ prev.link|e }}" class="btn btn-neutral float-left" title="{{ prev.title|striptags|e }}" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> {{ _('Previous') }}</a>
       {% endif %}
     </div>
   {% endif %}