Site preferences

You can refine certain site preferences in the Site settings > Template > Advanced > Site preferences tab.  These preferences are as follows:

Force https://
This forces your page to always load at https://, which will eliminate the Not secure warning displayed by some browsers.  Your site must have been live at yoursite.com for 48 hours to use this option.

Force primary domain
Perhaps your site uses both both yourname.com and yourname.net, for example.  When this option is checked it redirects all visitors to the primary domain name (perhaps yourname.com).

Display a cookie warning
This forces your visitors to accept the use of cookies on your website before the warning is removed.  As well, once checked, you can enter your preferred cookie warning text.