How to minimize view of a hosted video in the video widget

Hi there, I am stuck on not being able to reduce the view of a video cell. So for instance I have 3 videos in a row, with 3 editor widgets in a row underneath each video. They look great on a desktop, appear as 3 videos in one row with text underneath. Although appear as 2 videos acrosss and one underneath in the next row with text in 2 rows underneath, and are not responsive on a iOS phone device. So Firstly I want to be able to set up the 2 rows to read video – editor text times 3 in that order, and on an iOS device as 3 videos and 3 editor texts In the order of video, text, next video text, last video text. I have tried to minimize padding around each row, cell and widget but nothing seems to a)decrease video to a thumnail size and b) create a responsive layout on a smart phone.
Thanks for youre support- Helena