Twenty Thirteen: Responsive layout for entry media

If you have a sidebar in Twenty Thirteen then Video and Image formats do not resize correctly. The video or image gets squeezed to the left half of the screen. See https://aobblog.alunsalt.com/video-test/ and reduce the width of the window to see the problem.

The problem can be fixed by adding the the .sidebar .entry-media class somewhere in the section:

@media (max-width: 999px) {
	.sidebar .entry-header,
	.sidebar .entry-content,
	.sidebar .entry-summary,
	.sidebar .entry-meta,
	.sidebar .comment-list,
	.sidebar #reply-title,
	.sidebar .comment-navigation,
	.sidebar #respond #commentform,
	.sidebar .featured-gallery,
	.sidebar .post-navigation .nav-links,
	.author.sidebar .author-info,
	.sidebar .format-image .entry-content {
		max-width: 604px;
		padding-left: 0;
		padding-right: 0;
	}

in style.css

I’ve left the broken version live on my site so you can check the problem.