(homework) by Html write the code for a site that contains one page and this page contains three buttons, the first button to upload Excel files from the computer (more than one file), the second...

Extracted text: (homework) by Html write the code for a site that contains one page and this page contains three buttons, the first button to upload Excel files from the computer (more than one file), the second button to match the contents of the uploaded files together, and the third button to create an Excel file that contains The contents of the previous two files, but the content in both files is separated from the content in one of the two files and saved on the desktop