Hi
I have a number of pages with YouTube videos embedded. I have recently changed from Twenty Ten to Twenty Seventeen theme.
Youtube videos look fine on my computer screen and in landscape view on my Galaxy Note 3 mobile 'phone (in other words they are sized correctly in that their width matches the width of the screen). However, on portrait view on my mobile 'phone, the video appears too large, and only the central part of the video is seen. The left and right portions of the video are hidden from view. In other words, the YouTube video is not responsive to the mobile 'phone screen width.
I add the video to my pages by placing the video shortcode in my HTML-coded text in 'Text View' when editing. This worked fine till now.
Is there a way of making the YouTube video responsive to my mobile screen size, please? Many thanks