Does your theme allow you to upload an image via an ePanel or Editor?
Look to the left and in your Dashboard locate “Appearance” select one of the options “Theme” or in your case “PlatformPro”
Under the Header section upload your new Logo.
Otherwise your code above needs to be corrected in the “Dashboard” “Appearance” “Editor” section.
Look for the section on the right labeled “Header” Click it.
If the code was directly written into the CSS then look for something like this… (make the changes to the bold text) Your logo’s URL goes there. Don’t forget to save.
[ Moderator Note: Please post code or markup snippets between backticks or use the code button. As it stands, your code may now have been permanently damaged/corrupted by the forum’s parser. ]
<a>"><?php $logo = (get_option('estore_logo') <> '') ? get_option('estore_logo') : get_bloginfo('template_directory').'<strong>/images/logo.png</strong>'; ?>
<img src="<?php echo esc_url($logo); ?>" alt="<?php echo esc_attr(get_bloginfo('name')); ?>" id="logo"/></a>