change wordpress Radiate theme header image style.

gistfile1.php

		#inc/extras.php
		
		$header = get_header_image();

		$header_image = "background-image: url('$header');";
		$header_repeat = " background-repeat: no-repeat;";
		$header_width = " max-width: 100%; height: 480px; background-size: cover;";
		$header_position = " background-position: center bottom;";
		$header_attachment = " background-attachment: scroll;";
		$header_image_style = $header_image . $header_repeat . $header_width . $header_position . $header_attachment;