Couple suggestions to fix accessibility

Hi there; I’ve been trying to get my child theme to validate using an accessibility checker, and I’ve had to make a few tweaks to the code. Thought I’d list them here in case anyone else is working on this too..

In /framework/agama-functions.php I’ve had to change the H3 here to an H2 to solve a header nesting problem (using the grid layout for the blog)
<h2 class="assistive-text"><?php _e( 'Post navigation', 'agama' ); ?></h2>

In /framework/class-agama-frontpage-boxes.php I’ve had to change
echo '<em class="fa '. $box[1]['icon'] .'"></em>';
to add em instead of an i element, and adjust the style sheet to use the em instead of i element.

In /framework/agama-functions.php I’ve had to adjust all the <i> tags in the agama_render_blog_post_meta() function to use instead.

.entry-header .single-line-meta,
.entry-header .single-line-meta a {
	font-family: Crete Round;
	font-size: 13px;
	padding: 5px 15px;
	color: #aaa;
}