Since November 2022 Elevenfour no longer has a package server which means that you cannot download styles or plugins any more. The download pages are kept as an archive for now in case you might need some information. You can read more here: The Future of WoltLab Suite at Elevenfour

A Modern Interpretation of the Blue Sunrise Style Family for Your WoltLab Suite 5.

Bringing back memories of Burning Board 3.1 - free of charge

Install Horizon For Free



  • WS 5.5.2
  • WS 5.4.20




system fonts used to ensure GDPR compatibility

compatible with WoltLab apps

HiDPi-ready and responsive


modern code

5 variants

built with 15 years experience in designing for WoltLab apps

for a list of changes please read the changelog

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

The latest 5.4 version of this style is 5.4.3 - except for the variant Space Black which is 5.4.4


Horizon is a style family that's inspired by the Blue Sunrise style family that was originally designed by WoltLab for Burning Board 3. This style family currently consits of 5 variants: Space Black, Blue Sunrise, Blue Sunrise Snow-Edition, Green Sunrise and Red Sunrise.

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 family is color contrast - but remember: The Space Black variant is not best for everyone. So if you use it, make sure that you have another lighter version installed for those users who have a hard time using dark styles (even if contrast was high enough).

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 family 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 is build to work with all apps currently available by WoltLab: Core (of course), Forum, Filebase, Blog, Calendar and Gallery. If third party developers stuck with WoltLab Suite's standards this style will also be compatible with their plugins or apps.

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