Nice tribute page 
In <div class="col-md-12" id="top-level-well">,
you can remove the class (col-md-12 occupies the whole width anyway), and move the inline style to the CSS section.
You can replace
<div class="col-md-12 text-center">
<h4> ... </h4>
</div>
with just
<h4 class="text-center"> ... </h4>
<h*> tags are block elements by default, so they occupy the full-width.
You’d want to avoid using <h6> for the video caption. Use <p> instead, then change the font size with CSS.
Here’s a related topic