Supply Theme - How to remove padding to slideshow

[AmyLAylett]

I am trying to remove the padding from the sides of the slideshow in Supply Theme 

I have used the following code to remove the top under the menu:

 .main-content {
padding-top: 0px;
}

But does anyone know the code for the sides at all?

Thanks in advance.

[LetsCode]

Please Provide URL.

[AmyLAylett]

Lashbasebeauty.co.uk

[LetsCode]

Remove Max-width

[AmyLAylett]

That hasn't worked, already tried

[LetsCode]

https://prnt.sc/x7si5f
I tried

[AmyLAylett]

It is the padding here I wish to remove.