see for yourself in the video
Where is the video? I can’t see hidden content if it there.
Do you mean this?

If so, then here are the standard breakpoints that should be used in most cases.
/*Breakpoints*/
/* Desktop First */
@media (max-width: 1399.98px) {}
@media (max-width: 1199.98px) {}
@media (max-width: 991.98px) {}
@media (max-width: 767.98px) {}
@media (max-width: 575.98px) {}
/* Mobile First */
@media (min-width: 576px) {}
@media (min-width: 768px) {}
@media (min-width: 992px) {}
@media (min-width: 1200px) {}
@media (min-width: 1400px) {}
They must be located in this order at the very bottom of the document. There should be no other code below.

If there are several CSS rules for one breakpoint, you should not write them separately. Everything should be inside one media query
