WordPress get_bloginfo() Get site url
Example
<?php echo esc_url(get_bloginfo('url')); ?>
or if you needed to link to a sub page
<?php echo esc_url(get_bloginfo('url') . '/some-sub-page'); ?>
<?php echo esc_url(get_bloginfo('url')); ?>
or if you needed to link to a sub page
<?php echo esc_url(get_bloginfo('url') . '/some-sub-page'); ?>
