Where to Add Them in Elementor:

To add attributes in Elementor, right-click the element you want to edit and open its settings panel. This works the same way for sections, columns, and widgets.

How to Add an Attribute:

Inside Advanced → Attributes, type your custom attribute. If it doesn’t need a value, simply enter the attribute name on its own, such as ou-header. If it does require a value, use the format ou-header|value. Elementor will output it correctly in the final HTML.

If Multiple Values Are Needed:

Some attributes can take more than one value. In that case, separate them with spaces, for example data-type|primary large. Elementor will handle it automatically when the page renders.

Adding More Than One Attribute:

Place each attribute on its own line in the Attributes panel. Elementor handles all the formatting for you once the page is updated.