menu alignment at top

Hi there,

Hope someone can help me here. I want to display menu on top of page, currently it pops up after i scroll down, but want it fixed permanently at top, i found this in header. What must I change to keep the menu at the top?

<!–navigation–>
<?php wp_nav_menu( array( ‘container’ => ‘div’, ‘container_class’ => ‘menu’, ‘theme_location’ => ‘primary’, ‘depth’ => 1 ) ); ?>