Where can I get a simple template like in the sample?

Question

CMS

Good evening! The task is to make about 10 sites of the same type. Basically, contact information and attached documents will change.
Sample - vlzvoda.ru
Please tell me on which engine to do it (wordpress, joomla) or using html?
The task is to reduce the cost and ensure the security of the site as much as possible (fill the site and keep it hosted for months).
Having estimated, I thought what would be the most rational thing to do on html. Uniformity, the ability to upload a large number of sites without a database to hosting, security from all sorts of inherent CMS vulnerabilities
Bottom line:
1) Where can I get, buy a template simple as in the sample?
2) Which platform to use?
3) On what resources to serve (domain + hosting)

Answer 1

https://themeforest.net/popular_item/by_category?c...