Template might fit for all kind of event and organization purposes. If you want to present your website in best look than you might use Aventer to create your website very easily. Based on Bootstrap 4.x and all files and codes has been well organized.
Update: Joomla 4.1.3 & Helix Ultimate 2.0.9
Update: Joomla 4.1.0 & SP Page Builder Pro 3.8.5
Update: Joomla 4.0.6 & SP Page Builder Pro 3.8.3
Update: Joomla 4.0.5 & SP Page Builder Pro 3.8.2
Update: Joomla 4.0.4 & SP Page Builder Pro 3.8.1 & Helix Ultimate 2.0.6
Update: Joomla 3.10.3 & SP Page Builder Pro 3.8.0 & Helix Ultimate 2.0.5
Update: - Joomla 3.10.0 - SP Page Builder Pro 3.7.13