I have embeded a vimeo player in my HTML page within an IFrame. But I noticed that there's a black background in the image. I would prefer the video to fill the entire video container but I can't seem to modify the #player inside an iframe. How do I do this? Below is the image of the actual output and the sourcecode I used
And here's how I defined it
<div class="video-holder">
<iframe src="https://player.vimeo.com/video/5590682?" frameborder="0" allowfullscreen="allowfullscreen"></iframe>
</div>
Now I tried doing something like this
.video-holder. {
position: relative;
}
.video-holder iframe body html #player {
// Code here.
position: absolute;
top: 0;
left: 0;
width: 100%
height: 100%
max-width: 100%;
}
But upon checking, it seems that my selector does not work and it can't modify the #player element. How do I make the video fill the entire container (.video-holder).
Note that if I resize my browser into smaller width, the video fill the container in certain width but what I want is make it fit whatever the size of the screen. Something like this 
So basically I want to override the max-width: calc(133.333vh) defined in the #player element
I know modifying the iframe is agains the XSS but is there a way to tell the video in vimeo to fit the container or make the width 100% or something
