You can easily adapt our file uploader or dialog to your page style by modifying the
respective CSS stylesheet. However, some tabs are
opened in an
iframe from our domain, e.g., Facebook tab, Instagram, etc.
For those tabs you can customize, please use the following methods.
You can add some plain CSS code to tabs. Use classes to identify a tab you want to modify.
Another option is adding a CSS file to your tabs via an absolute file URL.
Note, tabs are opened via HTTPS. Hence there is no way to add a CSS file through HTTP. If your site does not support HTTPS, you can use a third-party hosting providing HTTPS support for such files. Amazon S3 is a good option.