How to Create Glowing Links in CSS3

This article demonstrates creating animated glowing links using CSS3. While a previous article used text-shadow and transparent text for a blur effect, this one leverages text-shadow for a glowing effect on hover or focus. IE9 users will need a newer browser as it lacks text-shadow support.

The effect is achieved with a combination of text-shadow and CSS3 transitions. Let's examine the code.

First, the HTML: A simple link with the class "glow" is used:

<a href="https://www.php.cn/link/93ac0c50dd620dc7b88e5fe05c70e15b" class="glow">Glowing Link</a>

The CSS starts by defining the initial state and transition properties. The transition is set to 500ms with linear timing for a smooth effect. Vendor prefixes are included for broad browser compatibility:

a.glow, a.glow:hover, a.glow:focus {
    text-decoration: none;
    color: https://www.php.cn/link/93ac0c50dd620dc7b88e5fe05c70e15baaf;
    text-shadow: none;
    -webkit-transition: 500ms linear 0s;
    -moz-transition: 500ms linear 0s;
    -o-transition: 500ms linear 0s;
    transition: 500ms linear 0s;
    outline: 0 none;
}

Next, the glowing effect is defined for the hover and focus states. Two text-shadows, one white and one yellow, are used for a more pronounced effect:

a.glow:hover, a.glow:focus {
    color: https://www.php.cn/link/93ac0c50dd620dc7b88e5fe05c70e15bfff;
    text-shadow: -1px 1px 8px https://www.php.cn/link/93ac0c50dd620dc7b88e5fe05c70e15bffc, 1px -1px 8px https://www.php.cn/link/93ac0c50dd620dc7b88e5fe05c70e15bfff;
}

A demonstration page (link omitted for safety) shows the effect. Experiment with different text-shadow and transition properties to customize the animation.

Browser Compatibility Notes:

The effect works well in modern browsers (Firefox, Chrome, Safari). IE9 lacks text-shadow support. Opera supports transitions but may not apply them consistently to text-shadows, resulting in a less smooth animation.

A second set of links in the demo uses a back-lit effect (changing text color to match the background), but this makes text invisible in older IE versions. Modernizr or a text-shadow detection script (example below) can address this:

if (document.createElement("detect").style.textShadow === "") {
    document.getElementsByTagName("html")[0].className += " textshadow";
}

This technique offers a simple yet effective way to add visual interest to links. Feel free to share your creations!

Frequently Asked Questions (FAQs) are omitted due to length restrictions but the original text provides comprehensive answers.

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