To change the default icon in a dropdown item in Webflow, you can follow these steps:
1. Select the dropdown component in the Webflow designer by clicking on it.
2. In the right-hand panel, you will see the Styles tab. Click on the "Open menu" icon in the top-right corner of the Styles tab.
3. In the Styles panel, scroll down until you find the "Dropdown" section. Expand it by clicking on the arrow next to it.
4. Under the "Toggle" sub-section, you will find the "Content" section. Here, you can customize the content of the dropdown toggle, which includes the default icon.
5. Next to the "Default Text" field, there is an "Add Element" button represented by a '+' icon. Click on it to add the desired icon element.
6. Once you click the "Add Element" button, a list of available elements will pop up. You can choose from various options, such as an image, shape, or an icon. Select the "Icon" element from the list.
7. After adding the icon element, you can customize it by selecting it and using the "Settings" tab in the right-hand panel. Here, you can choose the icon itself, size, color, and other properties.
8. Once you are satisfied with the icon customization, click outside the Styles panel to close it.
9. You can preview the dropdown item by clicking the "Preview" button in the top-right corner of the designer. Make sure the icon appears as expected.
10. Publish or update your site to make the changes live.
By following these steps, you should be able to change the default icon in a dropdown item in Webflow according to your preferences.