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How to remove author name on all your WordPress posts

Author name and links can be hidden in all WordPress posts on your site, by editing the default CSS Stylesheet, and adding the following to it:

.author {
     display: none;
}

Go to Appearance > Edit CSS, and you will be taken to CSS Stylesheet Editor.

Default CSS Stylesheet for Twenty Sixteen theme should look like this.

/*
Welcome to Custom CSS!

To learn how this works, see http://wp.me/PEmnE-Bt
*/

It should look something like this, after you add the snippet to hide name and link of the site account used to make the post.

/*
/*
Welcome to Custom CSS!

To learn how this works, see http://wp.me/PEmnE-Bt
*/
/* Remove posting account links from all posts*/
.author {
	display: none;
}

Source:

https://en.forums.wordpress.com/topic/can-i-remove-author-in-all-my-posts