Collapsible Horizontal Opt-in form in Genesis. http://sridharkatakam.com/collapsible-horizontal-opt-form-genesis/

functions.php

//* Register Home Optin widget area
genesis_register_sidebar( array(
	'id'          => 'home-optin',
	'name'        => __( 'Home Optin', 'lifestyle' ),
	'description' => __( 'This is the home opt-in form section.', 'lifestyle' ),
) );

add_action( 'genesis_after_header', 'sk_optin_below_header' );
/**
 * Display Home Optin widget area
 *
 * Context: Front page - only if Home Optin widget area is populated
 *
 * @author Sridhar Katakam
 * @link   http://sridharkatakam.com/collapsible-horizontal-opt-form-genesis/
 */
function sk_optin_below_header() {

	if ( is_front_page() && is_active_sidebar( 'home-optin' ) ) {
		genesis_widget_area( 'home-optin', array(
			'before' => '<div class="horizontal-optin widget-area"><div class="wrap">',
			'after' => '</div></div>',
		));
	}

}

//* Enqueue home.js
add_action( 'wp_enqueue_scripts', 'sk_home_js' );
function sk_home_js() {

	if ( is_front_page() && is_active_sidebar( 'home-optin' ) ) {
		wp_enqueue_style( 'dashicons' );
		
		wp_enqueue_script( 'home-js', get_bloginfo( 'stylesheet_directory' ) . '/js/home.js', array( 'jquery' ), '1.0.0', true );

	}

}

home.js

jQuery(function( $ ){

	$( '.horizontal-optin .enews' ).before( $('.horizontal-optin .enews .widget-title') );

	$( '.horizontal-optin .enews-widget .widget-title' ).click( function(){
		$( this ).next( '.enews' ).slideToggle();
		$( this ).toggleClass( 'closed' );
	})

});

style.css

/* Opt-in below header
--------------------------------------------- */

.horizontal-optin {
	margin-top: 40px; /*Delete this in Minimum Pro*/
	background-color: #f4f4f4;
	padding: 25px;
}

.horizontal-optin .enews-widget {
	margin-bottom: 0;
}
 
.horizontal-optin .enews-widget input {
    width: 33% !important;
}

.horizontal-optin .enews-widget .widget-title {
	cursor: pointer;
	position: relative;
}

.horizontal-optin .enews-widget .widget-title:after {
	content: "\f343";
	display: inline-block;
	-webkit-font-smoothing: antialiased;
	font: normal 15px/1 'dashicons';
	position: absolute;
	right: 0;
	top: 5px;
}

.horizontal-optin .enews-widget .widget-title.closed:after {
	content: "\f347";
}

.horizontal-optin .enews-widget .widget-title.closed {
	margin-bottom: 0;
	-webkit-transition:all 0.5s ease;  
	-moz-transition:all 0.5s ease;  
	-o-transition:all 0.5s ease;  
	transition:all 0.5s ease; 
}

@media only screen and (max-width: 1023px) {

	.horizontal-optin .enews-widget input {
 	   width: 32% !important;
	}

}
 
@media only screen and (max-width: 500px) {

	.horizontal-optin .enews-widget input {
		width: 100% !important;
		margin-bottom: 1rem;
	}

}