I have added a video to a costumer store instead of a pic on the slide show. On theme.liquid I added the code below. The video is playing good but:
1. How to make it automatically adjust to cell phone and to desktop?
2. what is the best size of video to it apear as wildscreen?
The store link is https://diehaargalerie-shop-ch.myshopify.com/
</div><section class="video-slider-area-center><div class "video-slider"><video <iframe width="985px" height="540px" src="https://cdn.shopify.com/s/files/1/0563/4496/9381/files/haar_galerie_video_slide.mp4?v=1623264083" autoplay muted loop playinline adapt to first image></video></div></section>