Hi w.mckinty,
Thank you for contacting pdf.js express forums.
Please provide more information, I am not sure which dropdown border you are referring to.
Is this for PDF.JS Plus version? PDF.js Viewer Demo | PDF.js Express
If possible can you also provide screenshots of the dropdown?
Here are some relevant forum posts that may also help:
Thank you in advance.
Best Regards,
Kevin Kim
Web Development Support Engineer
PDFTron Systems, Inc.
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