All Squarespace templates are mobile responsive, so your site will automatically look good on all devices. If you’re using Squarespace version 7.0, your template may have additional mobile styles activated when viewing it on a mobile device. These styles let you tweak font sizes, logo size, mobile navigation bars, and more. However, you won’t see these features with version 7.1 of Squarespace, as all the mobile optimization comes as standard.