Hover description opacity ease in and out on video blocks & automatic fullscreen playback on click custom CSS please help!

I'm looking to solve two issues. The first is regarding the hover text/description that is working great, except once the video title is clicked, the opacity remains dimmed until you fullscreen the video. Is there a way for this hover opacity to return to 100% once clicked?

And additionally, is it possible to have the video automatically enter fullscreen playback once clicked, with the easy option to exit the fullscreen (though this maybe limited to the embedded vendors functionality? such as vimeo?)

The site in question is: https://www.tomnoakes.net/

CSS applied so far:

.video-block {
   .embed-block-wrapper,
   .intrinsic-inner {
    padding-bottom: 40% !important
  }
}

/* Reels video overlay */
.video-caption-wrapper {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 100%;
    text-align: center;
    color: white;
    font-size: 16px;
    z-index: 50000;
    pointer-events: none;
    opacity: 0;
    transition: all 0.3s;
  pointer-events: none; /* enable click */
}
.video-block .intrinsic:after {
    content: "";
    background-color: rgba(0,0,0,0.5);
    display: block;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 20000;
    position: absolute;
    opacity: 0;
    transition: all 0.3s;
  pointer-events: none; /* enable click */

}
.video-block:hover .intrinsic:after {
    opacity: 1;
    transition: all 0.3s;
  pointer-events: none; /* enable click */

}
.video-block:hover .video-caption-wrapper {
    opacity: 1;
    transition: all 0.3s;
  pointer-events: none; /* enable click */

}

Thank you!