Ultimate Member customization. A solution to fix loading styles in the Impreza theme.

um_enqueue_style_in_header.php

<?php

/**
 * Some versions of the Impreza theme can not load styles in the footer.
 * Use this code to force load Ultimate Member styles in the header.
 */
function um_enqueue_style_in_header() {
	$um_styles = array(
		'um_old_css',
		'um_default_css',
		'um_styles',
		'um_account',
		'um_common',
		'um_confirm',
		'um_crop',
		'um_datetime',
		'um_datetime_date',
		'um_datetime_time',
		'um_fileupload',
		'um_fontawesome',
		'um_members',
		'um_misc',
		'um_modal',
		'um_profile',
		'um_raty',
		'um_responsive',
		'um_tipsy',
		'um_ui',
		'select2',
	);

	foreach ( $um_styles as $um_style ) {
		if ( wp_style_is( $um_style, 'registered' ) ) {
			wp_enqueue_style( $um_style );
		}
	}
}
add_action( 'wp_enqueue_scripts', 'um_enqueue_style_in_header', 200 );