I want to break the css relation ship between site-branding and site-header-menu

Can you show us a page with the issue?

<header id=”masthead” class=”site-header” role=”banner” >
<div class=”site-header-main”>
<div class=”site-branding”>
<?php twentysixteen_the_custom_logo(); ?>
<?php if ( is_front_page() && is_home() ) : ?>
<h1 class=”site-title”>” rel=”home”><?php bloginfo( ‘name’ ); ?></h1>
<?php else : ?>
<p class=”site-title”>” rel=”home”><?php bloginfo( ‘name’ ); ?></p>
<?php endif;
$description = get_bloginfo( ‘description’, ‘display’ );
if ( $description || is_customize_preview() ) : ?>
<p class=”site-description”><?php echo $description; ?></p>
<?php endif; ?>
</div>
<!– .site-branding –>
<?php if ( has_nav_menu( ‘primary’ ) || has_nav_menu( ‘social’ ) ) : ?>
<button id=”menu-toggle” class=”menu-toggle”><?php _e( ‘Menu’, ‘twentysixteen’ ); ?></button>
<div id=”site-header-menu” class=”site-header-menu siteheadermenu”>
<?php if ( has_nav_menu( ‘primary’ ) ) : ?>
<nav id=”site-navigation” class=”main-navigation” role=”navigation” aria-label=”<?php esc_attr_e( ‘Primary Menu’, ‘twentysixteen’ ); ?>”>
<?php
wp_nav_menu( array(
‘theme_location’ => ‘primary’,
‘menu_class’ => ‘primary-menu’,
) );
?>
</nav><!– .main-navigation –>
<?php endif; ?>
</div>
<!– .site-header-menu –>
<?php endif; ?>
<div class=”request”><!–<img src=”images/requestaquotebtn.png” height=”38px” width=”140px;”/>–> </div>
</div><!– .site-header-main –>
</header><!– .site-header –>

can you post a link to your site, and post the used CSS styles?

iam working on local..

generally, both containers do react independantly to padding;
however, if the site title or description is quite long, or the menu contains a lot of items, the containers overlap and react mixed …

without seeing your problem live, there is not much more to comment on the issue…

ok thanks for replying without seeing the issue live .
Problem even exits if the menu item contains only 2 pages. there is no description and there is no title even though the same problem i am facing..