Reply To: Menu navigation disappear at width

[__]

jQuery’s .slideToggle method animates the height of the element, and then sets display: none. You can add another media query to make sure the display is set back to block when wider than 750px.

@media (min-width:751px){
  nav ul{ display:block !important; }
}

codepen

On an unrelated note, why are you passing "show" to slideToggle? Looking at the docs, seems the only string arguments it expects are easing or duration, and “show” doesn’t mean anything in either case.