I don’t know what it is, from my experience, is that the majority of new clients love to center align (wait for it) everything. I think people want their website to look like poetry, or a limerick or something? Who knows haha.. From what Ive learned is that when you center align your body text, your eye has to actually work harder to find the next line. And like it says ‘each line starts a different edge’. When you left align text, life is easier, happier, and readability is way easier on your eyes. So when your editing your brand new site, think about this simple rule and your users will love you for it.