To hide the menu when scrolling a webpage, you can use JavaScript to detect the scroll event and add a class to the menu element that hides it when the page is scrolled. Here is an example of how you can do this:
window.onscroll = function() {
var menu = document.getElementById("menu");
if (document.body.scrollTop > 50 || document.documentElement.scrollTop > 50) {
menu.classList.add("hidden");
} else {
menu.classList.remove("hidden");
}
};
You will also need to add a style for the "hidden" class that hides the menu element. For example:
.hidden {
display: none;
}