[Theme: Vantage] Edit Entry-header for blog posts

Hello,

I’m trying to change the header of blog posts so that the title of the posts is centered and doesn’t have the white background on it. I’m using a child theme. Here are the edits I’ve made to the code in an attempt to try to solve it, but to no avail:

.entry-header {
	position: relative;
	z-index: 1;
	padding: 25px;
	text-align: center;
}

.blog .entry-title a {
	font-size: 40px;
	font-weight: 300;
	line-height: 1.0909090909;
	margin-bottom: 12px;
	margin: 25px;
	text-transform: uppercase;
	display: inline;
	text-align: center;
}

.entry-title a {
	color: #2b2b2b;
	text-align: center;
}

.entry-title a:hover {
	color: #ffb49d;
}

.site-content .entry-header {
	background-color: transparent;
	padding: 0 10px 12px;
}

.site-content .entry-content,
.site-content .entry-summary,
.site-content .entry-meta,
.site-content .entry-header,
.page-content {
        margin: 0 auto;
	text-align: center;
	background-color: transparent;

I also earlier used this piece of code to remove the entry-header from the other pages on the website:

.home article {
    padding-top: 0;
}

.entry-header {
    display: none;
}

.blog .entry-header {
  max-width: 100%;
  position: relative;
  display: inline;
}

Here’s the blog page. Please let me know if anyone has a solution or some advice.