This paragraph has been set to a 1em size, the default, to give you something to compare the rest of the text to. Remember it is not recommended that you use absolute units of measurement for non-print environments. Remember this advice from Accessible Information:
Using relative values in your coding gives control to the people using your site. It allows them to view the same version that everyone else sees, but they can choose to have bigger fonts for example. Most importantly this option gives the necessary flexibility, but preserves your styling and branding.