Genesis - Add search icon to search box and change search text

functions.php

<?php
//* Do NOT include the opening php tag
//* Enqueue Dashicons
//* CHECK YOUR functions.php FILE FIRST!
add_action( 'wp_enqueue_scripts', 'b3m_enqueue_dashicons' );
function b3m_enqueue_dashicons() {
    
    wp_enqueue_style( 'dashicons' );
 
}

//* Use dashicon for search button
//* http://melchoyce.github.io/dashicons/
add_filter( 'genesis_search_button_text', 'b3m_search_button_dashicon' );
function b3m_search_button_dashicon( $text ) {
	
	return esc_attr( '&#xf179;' );
	
}
//* Customize search form input box text of Genesis child themes
add_filter( 'genesis_search_text', 'b3m_genesis_search_text' );
function b3m_genesis_search_text( $text ) {
    
    return esc_attr( 'Search my blog...' );
    
}

style.css

.search-form {
	position: relative;
}

.search-form > input {
    padding-left: 40px;
}

.search-form input[type="submit"] {
    background: none !important;
    border: none;
    clip: inherit;
    color: #4a545a;
    display: inline-block;
    font: 28px/1 'dashicons';
    height: 38px;
    padding: 0 10px 0 12px;
    position: absolute;
    left: 2px;
    top: 12px;
    vertical-align: top;
    width: 38px;
}