Embed Google Drive File

 Step 1 This default embed link

<iframe src="https://drive.google.com/file/d/1gilq-VPpdGUCjpFiJqmxlqDfe0uoPPPM/preview" width="640" height="480" allow="autoplay"></iframe>

Setp 2 Get link to you are google drive file link

eg : your link is 

https://drive.google.com/file/d/1KmrHhWrFpnUnCsno-IDi_km2PLo8ESPx/view?usp=sharing

final step Inset your link

<iframe src="https://drive.google.com/file/d/1KmrHhWrFpnUnCsno-IDi_km2PLo8ESPx/preview" width="640" height="480" allow="autoplay"></iframe>