The code provided: ```css #hero__video { //How can I add a blur...

The code provided:

#hero__video {
 //How can I add a blur around the video, to make it merged with the background?
}

is a placeholder for a CSS selector that targets an element with the id of hero__video. However, the code does not currently apply any styles to the element. Instead, it includes a comment (//How can I add a blur around the video, to make it merged with the background?) asking how to add a blur effect around the video to help it blend with the background.

If you wish to achieve a blur effect surrounding the video, you could apply a filter property to blur the video itself, or use a combination of pseudo-elements and backdrop effects to give a blurred background. For example:

#hero__video {
  filter: blur(10px);
}

This would blur the video itself. Alternatively, you can use CSS techniques to create a blurred area surrounding the video.