Slider doesn't appear in full width

First of all. Love the template. Well done and super easy to set-up. Only question I have is how I can make the slider images full width. Currently I have grey bars on the left and right of the slider images. Would you mind taking a look?

Thank you!

Hi there,
Thanks for reaching out.
In reference to your question here, please try out the following CSS code under the Appearance>Customize>Additional CSS section:

.flexslider .slides img {
width: 100% !important;

I hope this helps.
Best Regards,