I want to hide the author meta in my posts

Maybe someone with more expertise than me can assist you in removing just the “BY ADMIN IN” part, but adding the following code to your Jetpack CSS editor (or whatever you’re editing your CSS in) should allow you to keep just the background:

.fleft {visibility: hidden;}

What theme are you using? You need to figure out which php file is handling the meta function call. The information about the author and date is called the meta information.

You can read about it here in the Codex.

It depends on your theme where the code is that you want to take out.

If you could find the code and post it here, someone will be able to tell you how to edit it.

Thank you both! I found the php file (it was called post-meta.php) and edited it there. Case closed! Thanks a bunch!!!