Unwanted Style Generating Automatically

All my pages and posts are having an automatic style added.

“style=text-shadow: none;” is automatically being added with every single line of my Edit Post HTML code.

I have NO idea what could be causing it.

Here’s a portion of a post… I didn’t once specific the “no text shadow” formatting.

<p style="text-shadow: none;">It takes a while...</p>
<p style="text-shadow: none;">And, needs to be done in more than one sitting.</p>
<p style="text-shadow: none;">One of the reasons we miss achieving our personal New Year's resolutions or business strategies is that we try to accomplish too much at once. We approach the 1,000-piece goal as if it can be finished in one sitting.</p>
<p style="text-shadow: none;">We get frustrated... The finish line seems a million miles away... And, we lose motivation.</p>
<p style="text-shadow: none;">A better approach is to cut your goal into bite-sized chunks.</p>

Thanks for any advice anyone can provide.

Paul