Help me set Max-width css to player id for vimeo iframe

see, id inside iframe can not be changed , at max we can edit width of the iframe.. but can not edit content in the iframe

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Hi Friend, I have read your description, so you need a help to sort out css issue. I am ready to help, can you please chat me. Thanks

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Hi Can You Answer My Question. --> The Link Which Is Loading In A Iframe Is Same Domain Link Or Cross-Domain Link. I Can Change It. My Skills Are PHP, HTML, CSS, Java Script And Web Development. I Have Experience In Similar Projects Like This In Upwork (dot) com. Thank You.