Make WordPress next / previous blog pagination buttons have left / right alignment

<div class="blog-navigation"><?php posts_nav_link( ' ', 'Previous', 'Next' ); ?></div>
.blog-navigation {
	display: flex;
	justify-content: flex-start;
	padding: 1rem 0;

	a {
		@extend .button;
		@extend .button--primary;
	}

	// Ensures Next button is always right aligned, even when no Previous button
	a:last-of-type {
		margin-left: auto;
	}
}