On most sites, your site title or logo appears at the top of your site. Display also depends on your site’s version:
On version 7.1, the site title and logo display is set by your site’s header layout.
On version 7.0, the site title and logo display is set by your site’s template.
Use this guide to learn more about how site titles and logos work on all sites, and the style tweaks to use if your site is on version 7.0.