Střední školy - učebnice - Schools United

#header { padding-top: 0; position: relative !important; top: 0; } .header-navigation { position: relative !important; } .overall-wrapper { margin: 0 !important; } body:not(.ready) { visibility: visible !important; }

You need to change a setting in your web browser

Please see: How to enable JavaScript in your browser.

If you use ad-blocking software, it may require you to allow JavaScript from this page.

Thank you.