How can I make the menu expand on top of the text?

Question

Bootstrap

Hello, when I open the menu, the text slides down, how to fix it?
Link

Answer 1

If you need to quickly, then: for an element with a class

navbar navbar-expand-lg navbar-light container-fluid

prescribe style position: fixed; and make its background opaque
UPD: Let's show the full solution right away:

@media only screen and (max-width: 991px)
#header .navbar {
  background: rgba(52,58,64,.3);
  border-radius: 5px;
  position: fixed;
}