How to adjust the size of a video block to be 2400 x 256 px?

I have a video with sponsor logos, and I would like it to loop continuously. It has dimensions of 2400x256px, but when I try to add a video block, it appears to be excessively large, and I am unable to adjust it to the video dimensions. I have already tried the following solutions:

#block-yui_3_17_2_1_1716279960748_84123.video-block .video-player {
    padding-bottom: 10.67%; 
}

and 

#block-yui_3_17_2_1_1716279960748_84123.video-block .video-player {
    width: 100%;
    max-width: 2400px!important;
    height: 256px!important;
}

#block-yui_3_17_2_1_1716279960748_84123.video-block iframe,
#block-yui_3_17_2_1_1716279960748_84123.video-block video {
    width: 100%;
}

Various codes of this type as above also did not work.

The website: 
www.toleasing.pl
p: toleasing

I want it placed like on the screenshot attached. 

Thanks in advance 🙂

Anyone? @tuanphan do you see any solution here? 🙂 

@tuanphan thanks a lot, it works perfectly! 🙂 

I have another issue with this video now. It seems like it does not work on some phones. My iPhone plays it without a problem, but my brother's Android shows only "Video is not available" or something similar. Do you have any idea what the issue could be?