Blurry full-size navigation is a modern navigation concept. It helps you to create a full-sized navigation menu and blurs the background using CSS blur filter. jQuery is used to toggle CSS classes only whenever navigation is opened or closed.

<div class="screen">
    <a class="target-burger">
      <ul class="buns">
        <li class="bun"></li>
        <li class="bun"></li>
  <nav class="main-nav" role="navigation">
      <li><a href=""><span>My Account</span></a></li>
      <li><a href=""><span>Billing Information</span></a></li>
      <li><a href=""><span>Order Tracker</span></a></li>
      <li><a href=""><span>Change Password</span></a></li>
      <li><a href=""><span>Log Out</span></a></li>
  <div class="container">
    <div class="app-content">
      <ul class="content-list">
              <img src="" alt="The Jim Lewis Dalaman Briefcase">
                <span class="category">Accessories</span>
                <h1>Eli DeFaria Dalaman</h1>
                <span class="price"> &pound;255</span>

See the Pen Frosty Nav Toggle Effect by Graham Wilsdon (@GrahamWilsdon) on CodePen.