Why isn't this div showing?

Hi there,

I am using wordpress to design a website. I bought a theme and installed it. I am trying to fit a small div next to my header logo, so I’m trying to have the same as the attached screenshot. However, I can’t seem to get it to work. I’ve edited the header.php file and the css file but it’s still not showing.

The header.php code is:

<div id="top">
                    <?php
                    $logotype = get_option('templatesquare_logo_type');
                    $logoimage = get_option('templatesquare_logo_image');
                    $sitename = get_option('templatesquare_site_name');
                    $tagline = get_option('templatesquare_tagline');
                    if($logoimage == ""){ $logoimage = get_bloginfo('template_url') . "/images/logo.png"; }
                    ?>
            <?php if($logotype == 'textlogo'){ ?>
            <div id="logo">
                    <?php if($sitename=="" && $tagline==""){?>
                            <h1><a href="<?php echo get_option('home'); ?>/" title="<?php _e('Click for Home','templatesquare'); ?>"><?php bloginfo('name'); ?></a></h1>
                        <span class="desc"><?php bloginfo('description'); ?></span>
                    <?php }else{ ?>
                        <h1><a href="<?php echo get_option('home'); ?>/" title="<?php _e('Click for Home','templatesquare'); ?>"><?php echo $sitename; ?></a></h1>
                        <span class="desc"><?php echo $tagline; ?></span>
                    <?php }?>
            </div><!-- end #logo -->
            <div id="media"><p>test</p></div>
            <?php } else { ?>
                    <div id="logo"><a href="<?php echo home_url( '/' ); ?>" title="<?php echo esc_attr( get_bloginfo( 'name', 'display' ) ); ?>" rel="home"><img src="<?php echo $logoimage;?>" alt="" /></a></div><!-- end #logo -->
            <?php }?>
            </div><!-- end top -->

and the css code is:

#top{height:125px;}
#logo{width: 750px; height: 125px;}
#media{width: 170px; height: 125px; background: red; margin:0px 0px 0px 760px; float: right;}

Can anyone please help me to make this media div visible? The link to the site is https://martins.ie/newsite/. Thank you