What can I do to resolve the issue of my Navigation Bar being blocked by a Javascript map?

My navbar creates a dropdown menu when I hover over it, but the map generated with the script tag blocks it.

Here is the current setup:

// JavaScript Document
//This will make the navigation bar responsive.
function myFunction() {
    var x = document.getElementById("myTopnav");
    if (x.className === "topnav") {
        x.className += " responsive";
    } else {
        x.className = "topnav";
    }
}

// CSS Styles
/* CSS Document */

h1 {
margin-top: 2.2em; 
margin-bottom: 2.2em; 
width:100%;
font-family: "Trebuchet MS", Arial, Helvetica, sans-serif; 
font-size: 5vmin; 
color: white; 
text-align:center; 
font-weight: 300; 
}
.auto-style1{
left: 25%;
right: 25%;
}

#map {
        height: 200px;
        width: 50%;
}

// More CSS styles...

// HTML content
<!doctype html>
<html class="">
<head>

<meta charset="utf-8">

<title>Contact Us</title>

<link href="_css/headfoot.css" rel="stylesheet" type="text/css">
<link href="_css/SPcontent.css" rel="stylesheet" type="text/css">

<style type="text/css">
body {
background-image: url(http://hitcolors.com/wp-content/uploads/2016/08/Green-1.jpg);
}
</style>

<script src="_script/headfoot.js"></script>
</head>

...

I want to bring the dropdown menu to the front and push the map to the back.

Answer №1

Your scenario perfectly highlights the importance of using z-index. For more information, refer to https://developer.mozilla.org/en-US/docs/Web/CSS/z-index.

In essence, a higher z-index value places an element "closer" to the screen compared to elements with lower z-index values. Therefore, for your situation, assign a z-index: 2; to your navigation and z-index: 1; to the map.

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