[Theme: Sparkling] Custom CSS is not working anymore

I have a code typed to my Custom CSS which I use to hide the title and modify a plugin in my homepage. It used to work perfectly. But then I put another CSS code to hide author names in blog posts, and I think it messed it all up!

The code works for the blog posts, but it stopped working for the home page. I don’t have any idea of why!!!

Here’s the code:

//Modifies Cue plugin removing its sidebar
.cue-playlist .cue-tracks {
	max-height: none;
}

//Hides the home page title
.page .entry-title {
	display: none;
}

//Hides the author name in blog posts
.entry-meta .byline {
	display: none;
}

.single .secondary-content-box {
	display: none;
}

My site: here