Adjust the scroll position in HTML by using a fixed navbar with Bootstrap 4

I am currently working on a single-page website with multiple sections. Users can navigate to these sections either by scrolling or by clicking on the navbar links. The issue I am facing is that the Bootstrap 4 navbar is fixed to the top, causing the content to be hidden beneath it. Is there a way to offset the anchors by -54px so that when a user clicks on a link, the content is displayed below the navbar (X:54px) instead of being covered by it (X:0px)?

I have created a CodePen to demonstrate the problem:
https://codepen.io/anon/pen/XEjaKv
When you click on a link, it takes you to the section but the navbar covers the text.

Each section has a height of 100 viewheight.

Here is the SCSS code I am using:

.container{
  section{
    height: 100vh;
    &#section1{
      margin-top: 54px; // We need to offset the first section by 54px because of the navbar.
    }
    &#section1, &#section3{
      background-color: #ddd;
    }
    &#section2, &#section4{
      background-color:#ccc;
    }
  }
}
html{
  scroll-behavior:smooth;
}

Answer №1

This simple yet effective CSS code snippet was the perfect solution for my needs:

body { scroll-padding-top: 100px; }

The height of my navigation bar is 100px

Answer №2

There are multiple approaches to solve this issue, but in my opinion, the most effective method is to insert a concealed pseudo element ::before before each section. This solution relies solely on CSS, eliminating the need for JavaScript or jQuery...

section:before {
    height: 54px;
    content: "";
    display: block;
}

This technique will create the necessary space to accommodate the fixed-top Navbar. Additionally, you should eliminate the margin-top adjustment for #section1 since this approach ensures consistency across all sections and enables scrollspy functionality.


Related
How do I add a data-offset to a Bootstrap 4 fixed-top responsive navbar?
Href Jump with Bootstrap Sticky Navbar

Answer №3

By utilizing jQuery, you can customize the default behavior without needing to alter the layout (such as margin, padding, etc).

  var divId;

  $('.nav-link').click(function(){    
    divId = $(this).attr('href');
     $('html, body').animate({
      scrollTop: $(divId).offset().top - 54
    }, 100);
  });

https://codepen.io/anon/pen/NYRvaL

Answer №4

This particular method involves adding padding and eliminating the gap by using a negative margin at the top. I found this approach to be the most effective for my needs.

section {
    padding-top: 56px;
    margin-top: -56px;
}

Section 1

Section 2

Section 3

Section 4

Answer №5

One technique I use is to dynamically adjust the vertical position of a header (or navbar) like so:

$('.nav-link').click(function(e){
    let targetOffset = $(e.target.hash).offset();
    let headerHeight = $('header').height();
    e.preventDefault();
    window.scrollTo({
    left: targetOffset.left, 
    top: targetOffset.top - headerHeight,
    behavior: 'smooth'
    });
});

Answer №6

When incorporating a sticky header, it's advisable to determine the height of your navigation bar and adjust the view accordingly. You could achieve this by adding some CSS like this:

body {
  margin-top:2rem;
}

Alternatively, you can also utilize JavaScript to handle this functionality.

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