Shortcode for showing post author box - [bc_author_box]

post_author_box.php

add_shortcode( 'bc_author_box', function($attr,$content = ''){
    $out = '<style>
	.bc_author_box {
    border: 1px solid #D8D8D8;
    white-space: nowrap;
    line-height: 0;
}

.bc_author_box .avatar {
    display: inline-block;
    width: 25%;
    height: auto;
}

.bc_author_right {
    display: inline-block;
    white-space: normal;
    width: 75%;
    vertical-align: top;
    padding: 10px;
    line-height: 140%;
}

.bc_author_link {
    float: right;
}
	</style>
	<div class="bc_author_box">'.
	get_avatar( get_the_author_meta('email'), '128', '/images/no_images.jpg', get_the_author_meta('display_name') ).
	'<div class="bc_author_right">
	  <div class="bc_author_name">'.get_the_author_meta('display_name').
	    '<a href="'.get_author_posts_url( get_the_author_meta( 'ID' ) ).'" class="bc_author_link">See more from this author</a>
	  </div>
	  <div class="bc_author_bio">'.
        get_the_author_meta('description')
	  .'</div>
	</div>
</div>';

    return $out;
} );