GOOGLE SITES EMBED CODE ISSUE

Hello there, I am building a website on google website, but I have some issues, (I'm not sure they can all be solved). TEST: [login to view URL] ​ LIBRARIES USED: Angular Material 1 [login to view URL] <link rel="stylesheet" href="[login to view URL]"> <script src="[login to view URL]"></script> <script src="[login to view URL]"></script> <script src="[login to view URL]"></script> <script src="[login to view URL]"></script> <script src="[login to view URL]"></script> SIMPLE CODE FOR EMBED CODE (see [login to view URL]) ISSUES: EMBED CODE RESPONSIVE ISSUE : see photos 1(desktop) & 2/3(mobile) PHOTO FROM GOOGLE DRIVE ISSUE ON SAFARI : see photo 4/5 (Code used : <img src="[login to view URL] ID GOOGLE DRIVE IMG> (Exemple: [login to view URL]) HOW TO HANDLE SEO INSERT LIBRARIES (like angular material 1) I CAN USE IN ALL "EMBED CODES." HOW TO EDIT CSS / STRUCTURE OF GOOGLE FORMS Thank you!