How TO - Curtain Menu
Learn how to create a curtain navigation menu.
Click on the buttons below to see how it works:
Try it Yourself »Create a Curtain Menu
Step 1) Add HTML:
Example
<!-- The overlay -->
<div id="myNav" class="overlay">
  <!-- Button to close the overlay navigation -->
  <a href="javascript:void(0)" 
class="closebtn" onclick="closeNav()">×</a>
  <!-- Overlay content -->
  <div 
class="overlay-content">
    <a href="#">About</a>
    
<a href="#">Services</a>
    <a href="#">Clients</a>
    
<a href="#">Contact</a>
  </div>
</div>
<!-- Use any element to open/show the overlay navigation menu -->
<span onclick="openNav()">open</span>
Step 2) Add CSS:
Example
/* The Overlay (background) */
.overlay {
  /* Height 
& width depends on how you want to reveal the overlay (see JS below) */   
  height: 100%;
  width: 0;
  
position: fixed; /* Stay in place */
  z-index: 1; /* 
Sit on top */
  left: 0;
  top: 0;
  
background-color: rgb(0,0,0); /* Black fallback color */
  background-color: rgba(0,0,0, 0.9); /* Black w/opacity */
    
overflow-x: hidden; /* Disable horizontal scroll */
  
transition: 0.5s; /* 0.5 second transition effect to slide in or slide down 
the overlay (height or width, depending on reveal) */
}
/* Position the content inside the overlay */
.overlay-content {
  
position: relative;
  top: 25%; /* 25% from the top */
  
width: 100%; /* 100% width */
  text-align: center; /* 
Centered text/links */
  margin-top: 30px; /* 30px top 
margin to avoid conflict with the close button on smaller screens */
}
/* The navigation links inside the overlay */
.overlay a {
  padding: 8px;
    
text-decoration: none;
  font-size: 36px;
  
color: #818181;
  display: block; /* Display block 
instead of inline */
  transition: 0.3s; /* Transition 
effects on hover (color) */
}
/* 
When you mouse over the navigation links, change their color */
.overlay 
a:hover, .overlay a:focus {
  color: 
#f1f1f1;
}
/* Position the close button (top right corner) */
.overlay .closebtn {
  position: 
absolute;
  top: 20px;
  right: 
45px;
  font-size: 60px;
}
/* When the height of the screen is less than 450 pixels, change the 
font-size of the links and position the close button again, so they don't 
overlap */
@media screen and (max-height: 450px) {
  
.overlay a {font-size: 20px}
  .overlay .closebtn {
    
font-size: 40px;
    
top: 15px;
    right: 35px;
  }
}
Step 3) Add JavaScript:
The example below slides in the overlay navigation menu from left to right (0 to 100% width), when it is triggered:
Slide in from the side
/* Open 
when someone clicks on the span element */
function openNav() {
  document.getElementById("myNav").style.width 
= "100%";
}
/* Close when someone clicks on the "x" 
symbol inside the overlay */
function closeNav() {
  
document.getElementById("myNav").style.width = "0%";
}
Try it Yourself »
The example below slides in the overlay navigation menu downwards from the top (0 to 100% height).
Note: In this example, note that the CSS is slightly different from the one above (default height is now 0, width is 100% and overflow-y is hidden (disable vertical scroll, except for small screens)):
Slide down from the top
/* Open */
function openNav() {
  document.getElementById("myNav").style.height 
= "100%";
}
/* Close */
function closeNav() {
  document.getElementById("myNav").style.height = "0%";
}
Try it Yourself »
This example opens the navigation menu without animation:
Open the menu without animation
/* Open */
function openNav() {
  document.getElementById("myNav").style.display 
= "block";
}
/* Close */
function closeNav() {
  document.getElementById("myNav").style.display = "none";
}
Try it Yourself »
Tip: Go to our CSS Navbar Tutorial to learn more about navigation bars.

