in home-administer-settings, this is all I can see together with the lines of which have to be boxes

Setup custom front pages for your site. Click on the option to expand the form and customise your settings.
Front Page settings for Anonymous Users (visitors not logged in)
Front Page settings for Authenticated Users (visitors already logged in)
Override your HOME breadcrumb links
Activate your front_page settings
Default Front page:
Once you are happy how your pages look change your default front page setting from node to front_page.

however, when I copy paste everything, the full text with all boxes and options are visible (as it is in the source code)

so, the problem is very simple: the source code has the text, my internet browser puts the text somewhere, but I cant see it, it's collapsed and I dont have a button to uncollapse it

(this is going to be such an easy answer, but I cant find it :'( )