How to make the site appear in full screen?

Question

css

How to make the site look like on a computer?
When logging in with a mobile devices have to reduce the size of the browser to see all the items on the site.
More precisely, when entering the site, the left corner is displayed to fit the device screen.
It is necessary to see the full page when entering with mob. devices.
How can I do that? Prompt
Thank you!

Answer 1

In order for everything to work, it is necessary that the input comes before the label, and not after. CSS selectors only work "forward", respectively, if you want to tie a style change to the checkbox state - it must be located in the DOM before the elements to which the styles depending on the checkbox state will be applied

Answer 2

[type=checkbox]:checked + .my_block {}
that's all the magic

Answer 3

<meta name='viewport' content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no'>

Look in this direction.