Install SSL Certificate + PHP+WP Update

A free SSL certificate has been installed directly, not through the host, because the host service is free only for a year and requires extension.

A certificate from a third-party source. PHP has also been updated to the up-to-date version 7.4.1 and WP has been updated to the up-to-date version 5.6.1 + correction of errors + repair of the slider on the main.