implementing a fixed header in HTML

I am facing a challenge where I have a header with dynamic height and fixed position.

My goal is to position the container div right below the header. However, since the header height varies, using a fixed value for margin-top is not feasible.

Any suggestions on how I can achieve this?

Below is the snippet of my CSS:

#header-wrap {
    position: fixed;
    height: auto;
    width: 100%;
    z-index: 100
}
#container{ 
    /*Looking for a CSS solution to start this div under the fixed header without specifying top margin/padding*/
}

...and here is a snippet of the HTML structure:

<div id="header-wrap">
  <div id="header">
    <div id="menu">
      <ul>
      <li><a href="#" class="active">test 0</a></li>
      <li><a href="#">Give Me <br />test</a></li>
      <li><a href="#">My <br />test 2</a></li>
      <li><a href="#">test 4</a></li> 
      </ul>
    </div>
    <div class="clear">
    </div>
  </div>
</div><!-- End of header -->

<div id="container">
</div>

Answer №1

To achieve the desired layout, make sure your #container is placed outside of the #header-wrap element. Then set a fixed height for #header-wrap and specify a margin-top for #container that is equal to the height of #header-wrap. Your CSS code should look like this:

#header-wrap {
    position: fixed;
    height: 200px;
    top: 0;
    width: 100%;
    z-index: 100;
}
#container{ 
    margin-top: 200px;
}

You can view an example here: http://jsfiddle.net/KTgrS/

Answer №2

Upon reviewing my question, I have come to the realization that I omitted mentioning a fixed margin value due to the dynamic height of the header.

For situations like this, I have been utilizing the following approach:

To account for the header's dynamic height, calculate it using jQuery and set it as the top margin value.

var divHeight = $('#header-wrap').height(); 
$('#container').css('margin-top', divHeight+'px');

Check out the demo here

Answer №3

section{
  margin:0;
  padding:0 0 0 0;
}
div#nav{
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:25;
}
@media screen{
 section>div#nav{
   position: fixed;
 }
}
* html section{
  overflow:hidden;
} 
* html div#main-content{
  height:100%;
  overflow:auto;
}

Answer №4

I believe the reason your header is fixed is to ensure it remains at the top of the screen even as the user scrolls down, while also preventing it from overlapping with other content. When you set position: fixed, the element is no longer positioned within the regular page layout. To work around this, you can adjust the top margin of the following element to match the height of the header. Alternatively, you could add a placeholder element that maintains the layout flow of the page but appears below the fixed header.

Answer №5

Using the CSS property position: fixed sets an element's position in a unique way compared to other layout styles. After applying fixed positioning to your header, remember to adjust the margin-top for the content div accordingly.

Answer №6

adjust the position of #container div to be at the top with a value of zero

#container{ 

 top: 0;

}

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