Скачать или смотреть Add Underline Animation for the First 4 Elements in CSS Navigation Menus

Learn how to implement `underline animations` specifically for the first four elements of a Bootstrap 4 navigation menu while retaining the original functionality.
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This video is based on the question https://stackoverflow.com/q/63397201/ asked by the user 'trzew' ( https://stackoverflow.com/u/14059904/ ) and on the answer https://stackoverflow.com/a/63397744/ provided by the user 's.kuznetsov' ( https://stackoverflow.com/u/13573444/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Introduction

As a beginner web developer utilizing Bootstrap 4, it's common to encounter various styling challenges while building your website. One such challenge arises when you want to customize your navigation bar's underline animations. If you’re looking to add an underline effect to only the first four items in your navigation menu, you’ve come to the right place! In this guide, we’ll walk you through a straightforward solution that retains the existing hover functionality while focusing the underline animation on just the first four menu items.

Understanding the Problem

Imagine you have a navigation bar with multiple items on a website, and you'd like to have a visually engaging underline effect when users hover over or click on the first four menu items. You already have a functional underline animation in place for all items, but now you want it to apply solely for the first four items. This style customization will improve the user experience and add a touch of uniqueness to your site.

Solution Overview

We will use CSS selectors to target the first four <li> elements of your navigation bar. By utilizing the :nth-child() pseudo-class, we can easily apply specific styles and animations only to those elements while leaving the other items unchanged.

Step-by-Step Implementation

Follow these simple steps to achieve the underline animation for the first four elements:

1. Identify Your Navigation Structure

Ensure that your navigation structure is correctly set up. For reference, here’s a snippet from your existing menu:

[[See Video to Reveal this Text or Code Snippet]]

2. Add the Required CSS Styles

Next, you will define styles strictly for the first four navigation items. Insert the following CSS rules into your stylesheet:

[[See Video to Reveal this Text or Code Snippet]]

Explanation of the CSS Rules

Base Styles: The first block sets the basic styles for your navbar links, including color and font properties.

Targeting Specific Links: The second block uses :nth-child(n) to select the first four <li> elements, adding the :after content necessary for the underline effect.

Hover Effect: The final block ensures that when users hover over the specified links, the underline expands from left to right, creating a dynamic visual effect.

Conclusion

Customizing your navigation menu adds a personal touch to your website. With this simple solution, you can effectively apply the underline animation to the first four items in your Bootstrap 4 menu without affecting the rest. Now, your navigation will not only look appealing but will also encourage user interaction. Happy coding!