How to Fix Table Borders in HTML and CSS

Discover why table borders in HTML and CSS merge and learn how to fix them with simple code adjustments.
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This video is based on the question https://stackoverflow.com/q/72273107/ asked by the user 'user19108175' ( https://stackoverflow.com/u/19108175/ ) and on the answer https://stackoverflow.com/a/72273541/ provided by the user 'MaxiGui' ( https://stackoverflow.com/u/11044542/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Fix Table Borders in HTML and CSS: A Comprehensive Guide

When working with HTML tables, one common issue developers encounter is the merging of table borders, leading to an unsightly and uneven appearance. If you've found that some of your table borders seem to be getting bolder than others, worry not—this guide will help you understand why this happens and how to fix it effectively.

The Problem Explained

As you build tables containing multiple rows and columns, you may notice that some cell borders appear thicker or merge together. This issue arises mainly due to the CSS property called border-collapse. Here's a quick explanation of how and why this occurs:

Border-collapsing combines adjacent borders of table cells into a single border. When each cell has its own borders, and border-collapse is set, they sometimes combine, creating a thicker appearance.

If every cell (td) has a border defined, and you've also set this property on the table, it causes the adjacent borders to merge.

Given this understanding, it's time to dive into the solution and understand how to resolve this problem.

The Solution Approach

To ensure table borders display correctly without merging, you need to make a few adjustments in your CSS. Here’s a structured approach to achieve desired results:

Step 1: Update the Table CSS

You may start by redefining the CSS for the table itself. Specifically, you want to avoid setting a border on the table but manage the border styling inside the cells.

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Step 2: Configure the Table Cells

You need to modify how individual cells are styled (the td elements) as well, especially by setting only the necessary borders.

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

Example Implementation

Here is a complete code example including HTML and CSS that demonstrates how to implement these changes effectively:

HTML Structure

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Complete CSS

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

Conclusion

By implementing these changes to your table's CSS, you can prevent the merging of borders that affects the appearance of your tables. Simple adjustments allow your tables to look clean and well-organized without unwanted heavy lines cluttering the layout. Now you can focus on creating beautiful data representations without worrying about unsightly border issues. Happy coding!

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