[Plugin: MediaElement.js – HTML5 Video & Audio Player] Default style problem with Twenty Eleven

When I inserted a audio player at the very bottom of a post. The styles probably not very nice: https://cl.ly/9DMN

I suggest you add a CSS rule at .mejs-container:

margin-bottom: 1.625em;

Then it will looks better.

https://www.ads-software.com/extend/plugins/media-element-html5-video-and-audio-player/