How Can I Use CSS `nth-of-type` to Select Elements Based on Both Position and Class?

CSS 3 nth-of-type: Limiting to Specific Classes

CSS 3's nth-of-type selector allows developers to select elements based on their position within a group of siblings. However, it currently has a limitation when it comes to selecting elements based on their class.

Specifically, nth-of-type considers all sibling elements, regardless of their class, when determining the element's position. This means that if you want to select every third element with a specific class, nth-of-type alone cannot achieve this.

For example, in the provided HTML, you want to select every third element with the class ".module". However, using ".featured.module:nth-of-type(3n 3)" will also select the ".featured.video" element because it is also the third sibling overall.

Solution

Unfortunately, as per the current limitations of CSS, there is no direct way to restrict nth-of-type to a specific class. As a workaround, you could consider manually adding a unique class, such as ".module3" or ".module6", to every third ".module" element. This would allow you to use nth-of-type to select based on the unique class instead.

Note: nth-of-class is not a valid selector in CSS 3, which is why it is not possible to use it as a solution.

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