What is the best way to prevent content from jumping around on a webpage?

After implementing a sticky header on scroll, I encountered an issue. When scrolling down by 1000px, the 'sticky' class is added to the header causing a slight jump in the content. This may be due to the header no longer visually existing in that location within the markup.

I've tried adding a specific height to the header and wrapping a div around the container to keep the 'sub-header' in place, but unfortunately, these attempts have been unsuccessful. How can I resolve this issue?

View live code example: http://codepen.io/anon/pen/qbaQvL?editors=110

javascriptjquerycss

Answer №1

To activate the sticky feature, make sure to also adjust the margin-top of the about element to match the height of the sticky section.

Here's an example of how to do this:

if (windowPos >= content) {
  $('#sub-header').addClass('sticky');
  $('#about').addClass('sticky-active');

} else {
  $('#sub-header').removeClass();
  $('#about').removeClass();
}
#about.sticky-active {
  margin-top: 96px;
}

I have also created a functioning version on Codepen. You can view it here.

Answer №2

To achieve a sticky header, simply apply padding to the body element:

JavaScript logic:

if (scrollPos >= headerHeight) {
  $('#header').addClass('sticky');
  $('body').addClass('scrolled');
} else {
  $('#header').removeClass();
  $('body').removeClass('scrolled');
}

CSS styling:

body.scrolled {
  padding-top: 60px;
}

Answer №3

To create a fixed header while scrolling, you can use absolute positioning:

...
#sub-header {
    position: absolute;
  width: 100%;
}
#sub-header, #sub-header.sticky {
    background: #FFF;
    border-bottom: 1px solid #f0f0f0; 
    z-index: 2000;
}
...

Additionally, remember to add padding to your sections for proper spacing:

section {
  padding-top: 96px;
}

Check out this link for a live example: http://codepen.io/anon/pen/PZGxMZ

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