Automatically adjust the top margin of the content section to accommodate a fixed header height

After extensive searching, I've come across various solutions but none of them seem to fit my needs. I am a beginner/amateur developer.

The issue I am facing is with a fixed header that resizes when scrolling. I understand that by adding padding-top: 100px, my content will stay below the fixed header. However, as the size of the fixed header changes while scrolling, I want the top padding of the content section to automatically adjust based on the size of the fixed header.

<header id="main-header" class="">
    <div class="wrapper">
        <div id="navigation">
            <nav id="top-menu-nav">
                <ul id="top-menu" class="nav">
                   <li> menu 1</li>
                </ul>                   
            </nav>
        </div>
    </div>
</header>
<div id="content">

CSS

#main-header{position:fixed;z-index:99999;width:100%}
#content{position:relative}

I have attempted to use the following script in my header, but it does not seem to work. Can you help me figure out what I am doing wrong?

Script

<script>
    $(window).resize(function(){
    var height = $('#main-header').height();
    $('#content').css({'padding-top':height});
    }).trigger('resize');
</script>
javascripthtmlcss

Answer №1

Everything seems to be working perfectly now. I made sure to adjust the header location and specified the margin for the content instead of using padding.

$(window).resize(function() {
  var height = $('#main-header').height();
  $('#content').css({
    'margin-top': height
  });
}).trigger('resize');
#main-header {
  position: fixed;
  z-index: 99999;
  width: 100%;
  top: 0;
  left: 0;
  /* For visibility */
  background-color: lightgreen;
}

#content {
  /* For visibility */
  width: 100%;
  background-color: lightblue;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<header id="main-header" class="">
  <div class="wrapper">
    <div id="navigation">
      <nav id="top-menu-nav">
        <ul id="top-menu" class="nav">
          <li> menu 1</li>
        </ul>
      </nav>
    </div>
  </div>
</header>
<div id="content">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</div>

Answer №2

Here's a suggestion to try:

<script>
$(window).load(function(){
    headerHeight = $('#main-header').height();
    $('#content').css('padding-top' , height + 'px');
});
$(function(){
    $(window).scroll(function(){
        if($('#main-header').height() != headerHeight) {
            headerHeight = $('#main-header').height();
            $('#content').css('padding-top' , headerHeight + 'px');
        }
    });
});
</script>

This script monitors changes in the size of the #header-div during scrolling.

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