Center Featured Image Please

I love Fashionista theme. You guys are doing a great job.

I have been searching the archives and couldn’t found the solution for this.
I would like to centre my featured images please.
All images now are justify left.

How do you do it?
I am not a css expert. If you can give me the full code that I can copy and paste, I will be so grateful. I am using a child theme.

Here is my website:

Thank you so much

Hi Arief,

I just visiting your site and looks like not all of the featured images are displayed as well.

But, here is the css code to make the featured image centered:

.entry-thumbnail img {
    margin-left: auto;
    margin-right: auto;

You can paste the code above in style.css in your child theme

Thank you so much for your help, Awan.

Now every featured image is centered.

So, I’m not great with css stuff and I tried to implement the above and think I may have accidently deleted some essential code in the process-- on TOP of my featured images not being centered. SOS.

I am also having problems with getting my top menu to turn off and am now scared to touch any of the code using your forums suggestions.

Thanks in advance!