We all know that validating is important. However, not all developers – especially plugin developers- believe it is important. Unfortunately, some of these plugins are needed and save a lot of time. One of the most useful plugins around is Feature Content Gallery by iePlexus. They built a really nice, easy-to-use slider or feature content gallery. There are some others out there, but we think that Feature Content Gallery is the simplest for our users and it is reliable. We use it on a lot of our sites. However the main drawback is that it does not validate. In this tutorial we are going to show you how to get Feature Content Gallery to validate.
So how do you go about getting Feature Content Gallery to validate?
1. Go to your plugin folders (which is located in your wp-content/plugins) then go to the folder Feature Content Gallery.
2. Find the file gallery.php and open it up.
3. Go to line 11 and delete the following code. Save it and upload it back.
4. Go to the folder wp-content/plugins-Feature-Content-Gallery/css and open up the file jd.galley.css.php.
5. Go to line 19 and take the code shown and add it. Then save and upload. 
6. Test that you have not broken anything and then validate.
Please comment