What purpose does the blank space above the navigation bar serve?

Looking to create a fixed navigation bar but encountering space above the menu. I've tried various solutions to no avail, searching through the code for any potential spacing issues.

#nav {
  position: fixed;
  text-align: center;
  font-size: 22px;
  background-color: #222222;
  margin: 0 auto;
  width: 100%;
}
#nav ul li a {
  color: #ccc;
  display: block;
  padding: 10px;
  text-decoration: none;
}
#nav ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
  position: relative;
}
#nav ul li {
  display: inline-block;
}
#nav ul li:hover {
  background: #333333;
}
#nav ul li a:hover {
  text-shadow: 3px 2px 3px #333333;
  text-decoration: none;
  position: relative;
  bottom: 5px;
  color: #fdde00;
}
html,
body {
  height: 100%;
  width: 100%;
  padding: 0;
  margin: 0;
}
<div id="nav">
  <ul>
    <li><a href="#">Test</a></li>
    <li><a href="#">Test</a></li>
    <li><a href="#">Test</a></li>
    <li><a href="#">Test</a></li>
  </ul>
</div>

<div>
  <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit... velit...

Answer №1

This issue is known as margin collapsing. The space at the top occurs because of the default margin set on the <p> element.

Here are 3 solutions to address this problem:

  • remove the default margin from the p element using p{margin: 0;}
  • apply top:0; to the .nav element
  • include overflow:hidden; in the second div

To learn more about preventing margin collapsing, you can visit How to disable margin-collapsing?

Answer №2

To fix this issue, you can simply include top: 0; in the CSS for the fixed nav element:

#nav {
    position: fixed;
    text-align: center;
    font-size: 22px;
    background-color: #222222;
    margin: 0 auto;
    width: 100%;
    top: 0;
}

JSFiddle

Answer №3

Edit this snippet in your stylesheet:

#header {
    position: fixed;
    text-align: center;
    font-size: 18px;
    background-color: #333333;
    margin: 0 auto;
    width: 100%;
    top:0;
}

#main-content{
    margin-top:70px;
}

Also, make changes to the following section of your HTML:

.....
</div>
<div id="main-content">
    <p>
    .....

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