In order to dynamically adapt the player to the size of the content, the CSS to display the iFrame must respect the form factor. This is a simple CSS that the webmaster should take into account. This can be achieved with two small changes:
<div style="position:relative;padding-bottom:56.25%;">
<iframe style="width:100%;height:100%;position:absolute;left:0px;top:0px;" title="Links für externe Inhalte" src="https://media.video.taxi/embed/6TQrVFhBb69N?title=false" frameborder="0" allow="autoplay; clipboard-write; encrypted-media; picture-in-picture" allowfullscreen=""></iframe>
</div>
or pure CSS:
.video_wrapper {
position: relative;
padding-bottom: 56.25%;
}
iframe{
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}