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CSS Outline Width

The outline-width property controls the thickness of the outline. Similar to border-width, you can use keywords (thin, medium, thick) or numerical values (px, em) to find the perfect balance between subtle highlighting and strong emphasis.

Key Topics

Setting Outline Width

For example, outline-width: 5px; creates a thicker line, while outline-width: thin; produces a subtle effect.

<!DOCTYPE html>
<html lang="en" >
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Outline Width Example</title>
    <style>
        .wide-outline {
            outline-style: solid;
            outline-color: red;
            outline-width: 5px;
            padding: 20px;
            font-family: Arial, sans-serif;
        }
    </style>
</head>
<body>
    <div class="wide-outline">
        <h2>Thick Red Outline</h2>
        <p>A 5px outline emphasizes this element significantly.</p>
    </div>
</body>
</html>

Explanation: A thicker outline creates a stronger visual cue, useful for drawing immediate attention to important elements.

Achieving Visual Balance

Experiment with different widths to ensure the outline complements the design rather than distracting from content. A subtle thickness often works best for focus indicators, while a bold line might be handy for debugging.

Key Takeaways

  • Thickness: Outline width affects how noticeable the outline is.
  • Flexibility: Use keywords or fixed units to achieve desired thickness.
  • Design Harmony: Balance outline width with other page elements for a cohesive look.
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