DI Portal is entirely web-based (SharePoint technology) and runs on most modern browsers and computers. If you see some unexpected behavior, you may want to switch to a supported operating system and browser. See below for more specific information.
To download a browser, visit Browse Happy.
If you'd like to check your browser version, you can visit What Is My Browser.
Microsoft reference : Plan browser support in SharePoint 2016 and 2019
The recommended screen resolution is 1280*1024 or higher but you are free to choose your favorite screen resolution.
Most of documents uploaded on the DI Portal are PDF. You need to install a PDF Reader as Adobe Acrobat Reader or Sumatra PDF Reader.
For other documents: DOCX, XLSX or PPTX (from MS Office Suite), you need to have MS Office 2010 or upper version installed.