If you upgrade from WoltLab Suite 5.5 to 6.0 you need to uninstall all styles by Elevenfour and their plugins. After the upgrade to 6.0 you can install the styles again if available. This is due to bug in WoltLab Suite which prevents to include the new dark color schemes. Some styles also changed their package identifier and some dependencies.

A Modern Interpretation of the Blue Sunrise Style Family for Your WoltLab Suite 6.

Bringing back memories of Burning Board 3.1 - free of charge

Install Horizon For Free



  • WS 6.0.2




system fonts used to ensure GDPR compatibility

compatible with WBB & Core

HiDPi-ready and responsive


modern code

dark and light mode

built with 15 years experience in designing for WoltLab apps

for a list of changes please read the changelog

Version 6.0.0

  • compatibility with WS 6.0
  • new package identifier (cannot upgrade from previous version)
  • removed the color variations: green, red, snow
  • new: dual color scheme: blue (light mode) and black (dark mode)
  • new language variables
  • package dependency changed from Language Package to Creator Suite

Version 5.5.0

  • compatibility with WS 5.5
  • update pageFooter Template
  • new userMenu design
  • design for the new global create thread dialog
  • updated $wcfFontSizeDefault (in SCSS)

Version 5.4.4 (Space Black only)

  • fix wrong a forgotten wrong fade-out value

Version 5.4.3

  • fix for mainMenu if too many items
  • fix spacing on reduced messages
  • Space Black: added dark color scheme for form elements

Version 5.4.2

  • fix: wrong color for links in box titles (was missing for some reason)

Version 5.4.1

  • fix: wrong color for links in box titles (except Space Black)
  • new: accent color for inputs
  • new: added custom value for $wcfPageThemeColor (except Space Blue)

Version 5.4.0

  • compatibility with WoltLab Suite 5.4

Version 5.3.1 (only Space Blue)

  • fixed color issues with wcfSidebarHeadline
  • fixed template pageFooterStyleCopyright

  • not updateable, needs to be reinstalled, sorry

Version 5.3.0

  • compatibility with WoltLab Suite 5.3


Horizon is a style that's inspired by the Blue Sunrise style family that was originally designed by WoltLab for Burning Board 3. This style family currently has a light and a dark color scheme.

Compared to the default style of WoltLab Suite Core Horizon comes with improved accessibilty. For example the font size is truly responsive; so if you change your browser's default font size the style will seamlessly adapt. Also some links are more easy to discover since they're either blue oder underlined or even both. Another focus of this style is color contrast.

To make sure this style is compatible with GDPR it does not load external resources like Google Fonts. Instead there's a font stack set that falls back to each system's system font if Trebuchet MS was not available. Trebuchet MS is the font that was used as the default font in Burning Board 3.

As always the code used to build the Horizon style follows modern standards. It's modular and well structured so Horizon is not only a beauty on the front end but also the back end. Horizon officially works with WoltLab Suite Core (of course) and Forum; other apps aren't supported officially but could work just fine.

If you're running this style in a multilingual system: There are language variables available for Horizon in German, English, French and Spanish.