CSS scroll-margin-block Property

Posted in CSS Tutorial

Updated on Oct 07, 2024

By Mari Selvan

👁️ 15 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

🙋 Introduction

The scroll-margin-block property in CSS is used to adjust the scroll snap area at the block start and block end of an element.

This property is particularly useful when implementing scroll snapping in a vertical writing mode or when you need to add margins to the scroll snap position. By using this property, you can control the proximity of elements to the container's scroll position, enhancing the scrolling experience.

💡 Syntax

The syntax for the scroll-margin-block property is straightforward and allows you to specify the margin for the block start and block end.

Syntax

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element {
  scroll-margin-block: start end;
}

Here, start and end can be any valid CSS length value (e.g., px, em, rem) or a percentage.

🎛️ Default Value

The default value of the scroll-margin-block property is 0, meaning no additional margin is added to the scroll snap area.

🏠 Property Values

Value	Description
length	Specifies a fixed margin (e.g., 10px, 2em, 1rem).
percentage	Specifies a margin relative to the block size of the element (e.g., 10%).

📄 Example

In this example, we'll add scroll margin to a section element to ensure it doesn't touch the edges when snapped into view.

index.html

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>CSS scroll-margin-block Example</title>
  <style>
    html {
      scroll-snap-type: y mandatory;
    }
    section {
      height: 100vh;
      scroll-snap-align: start;
      scroll-margin-block: 20px;
      background: lightblue;
      border: 2px solid blue;
      margin: 10px 0;
    }
  </style>
</head>
<body>
  <h1>Sections with Custom Scroll Margin Block</h1>
  <section>Section 1</section>
  <section>Section 2</section>
  <section>Section 3</section>
</body>
</html>

🖥️ Browser Compatibility

The scroll-margin-block property is supported in most modern browsers, including the latest versions of Chrome, Firefox, Safari, Edge, and Opera. However, it is always a good practice to test your website across different browsers to ensure compatibility.

🎉 Conclusion

The scroll-margin-block property is a useful tool for web developers looking to fine-tune the scrolling experience on their websites.

By adding margins to the scroll snap area, you can ensure a more comfortable and visually appealing layout. Experiment with different values to see how this property can improve the usability of your scrollable content.