A sticky navigation is a navigation that stays fixed to the top of the screen as the user scrolls down the page. Here’s an example of how you might implement a sticky navigation using HTML, CSS, and JavaScript:

HTML:

<div id="navbar">
  <ul>
    <li><a href="#section1">Section 1</a></li>
    <li><a href="#section2">Section 2</a></li>
    <li><a href="#section3">Section 3</a></li>
  </ul>
</div>

CSS:

#navbar {
  position: fixed; /* position element on top of the page */
  top: 0; /* position element at the top of the page */
  width: 100%; /* take up the full width of the page */
  background-color: #fff; /* give the navbar a background color */
  z-index: 1; /* ensure the navbar appears above other elements */
}

JavaScript:

window.onscroll = function() {stickyNavbar()};

// Get the navbar
var navbar = document.getElementById("navbar");

// Get the offset position of the navbar
var sticky = navbar.offsetTop;

// Add the sticky class to the navbar when you reach its scroll position. Remove "sticky" when you leave the scroll position
function stickyNavbar() {
  if (window.pageYOffset >= sticky) {
    navbar.classList.add("sticky")
  } else {
    navbar.classList.remove("sticky");
  }
}

You can also use CSS position:sticky property instead of javascript. And you need to check browser support before using it.

#navbar {
    position: -webkit-sticky; /* Safari */
    position: sticky;
    top: 0; /* position element at the top of the page */
    width: 100%; /* take up the full width of the page */
    background-color: #fff; /* give the navbar a background color */
    z-index: 1; /* ensure the navbar appears above other elements */
}

You can also add some transition to make it look more smooth.

#navbar.sticky {
    transition: top 0.5s;
}

You can customize the HTML, CSS and javascript according to your requirement.

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