There is some kind of border below my header(black line). I can’t get rid off it, I tried entering all kinds of lines of people, that had the same problem, into custom css style, but it won’t work for me.
Also with the theme I’m using I can’t find an option to turn it off in the customization menu.

Thank you very very much in advance for your time.

Can someone give me exact instructions for how to insert a logo into my header for black line theme. I have tried and tried but keep making a mess.

<div class="main">
		<div class="hdr1">

			<div class="head">
			<?php if ( function_exists( 'jetpack_the_site_logo' ) ) jetpack_the_site_logo(); ?>
			<h1 class="site-title"><a href="<?php echo esc_url( home_url( '/' ) ); ?>"><?php bloginfo( 'name' ); ?></a></h1>
			<h4 class="site-description"><?php bloginfo( 'description' ); ?></h4>

			</div>

				<div class="sidebar-head3 span2">
					<?php dynamic_sidebar('sidebar-head'); ?>
				</div>

				<div class="sidebar-head4 span2">

					<?php if (class_exists('woocommerce')) :?>

							<?php global $woocommerce; ?>

My logo url is: https://www.dayanddawn.com/wp-content/uploads/2015/03/DayandDawn.png

Thank you .