Making Slider images Full Width

My site is here:

How do I go about making the slider images full width (stretching 100% side-to-side). I’m sure this is a css fix, but I can’t get it working.

Hello there,

I hope you are doing well today.

You can use the following CSS code to increase the width of the image by going to Appearance > Customize > Additional CSS and pasting it there.

/*Slider max width*/
.flexslider .slides img {
    width: 100%;

Best Regards,