How to Create a Tooltip Tail with Pure CSS?

Creating a "Tooltip Tail" with Pure CSS

The "tooltip tail" effect refers to a visual element often used in web design to indicate additional information or context. It typically appears as a small triangle or arrow pointing from the main tooltip element toward the target element.

How the Effect Works

The original CSS trick utilizes the CSS border property to create the tail shape. By setting the border style, width, and color accordingly, you can achieve the desired triangle effect. For example:

.tooltiptail {
    border-color: #ffffff #a0c7ff #ffffff #ffffff;
    border-style: solid;
    border-width: 20px;
    width: 0px;
    height: 0px;
}

Extending the Effect

To create the more elaborate tail effect shown in the question, you can leverage CSS shadows and additional border elements.

<div>

#tailShadow {
    box-shadow: 0 0 10px 1px #555;
}

#tail1 {
    border-color: #a0c7ff transparent transparent transparent;
    border-width: 10px;
}

#tail2 {
    border-color: #f9f9f9 transparent transparent transparent;
    border-width: 10px;
}

Cross-Browser Compatibility for Shadows

While the CSS box-shadow property is widely supported in modern browsers, it's important to note that it may not render consistently across all browsers. For increased compatibility, consider using a combination of CSS shadows and background gradients.

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