How can I make the drop down menu appear over the other content below it?

Question

1.00/5 (1 vote)

See more:

CSS

body{
background-image: url('image.jpg');
background-size: none;
margin-left: 100%;
margin-top: -500px;
z-index: 9999;
}

ul{
  margin: 0px;
  list-style: none;
  padding: 0px;
  display: inline;
  z-index: 9999;
}

ul li{
  float: left;
  width: 300px;
  height: 40px;
  background-color: black;
  opacity: .8;
  line-height: 40px;
  text-align: center;
  font-size: 15px;
  z-index: 9999;
}

ul li a {

  text-decoration: none;
  color: white;
  display: block;
  z-index: 9999;
}

ul li a {
 text-decoration: none;
 color: white;
 display: block;
 z-index: 9999;
}

ul li ul li{
  display: none;
  z-index: 9999;
}

ul a:hover{
  background-color: green;
  color: white !important;
  z-index: 9999;


}

ul li:hover ul li{
  display: block;
  z-index: 9999;

}

HTML

<html>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" type="text/css" href="style3.css">
  <link rel="stylesheet" type="text/css" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">
<header>
    <ul> 
      <h3><li><a href = "#">Hello, <?php echo $_SESSION['username']; ?></a></li></h3>

    </ul>

    <ul>
      <li><a href = "#">Home</a>
      <ul>
        <li><a href = "main.php">Account</a></li>
        <li><a href = "login.php">logout</a></li>
      </ul>
      </li>
    </ul>
    <ul>
      <li><a href = "#">Genus</a>
      <ul>
        <li><a href = "">Test</a></li>
        <li><a href = "">Test</a></li>
      </ul>
      </li>
    </ul>
    <ul>
      <li><a href = "#">Morphology</a>
      <ul>
        <li><a href = "">Test</a></li>
        <li><a href = "">Test</a></li>
      </ul>
    </ul>
      </li>
    <ul>
        <li><a href = "#">Species</a>
    <ul>
        <li><a href = "">Test</a></li>
        <li><a href = "">Test</a></li>
    </ul>
</header>
</html>

What I have tried:

I have tried implementing a z-index on various parts of the code, but unfortunately this did not help.

Posted 5-Jun-21 8:35am

Ewan McQueen

Updated 8-Jun-21 23:16pm

Richard Deeming

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

W∴ Balboos, *GHB* · Answer 1 · 2021-06-08T10:10:00

Solution 1

From what I can see, you've given the same z-index (9999) to all of your CSS.

The item(s) you wish to have on top should have the higher z-index and those desired below to have lower z-index.

Try using z-index for what is was designed for and used different values for the various elements.

Posted 8-Jun-21 10:10am

W∴ Balboos, GHB