Remove grey border around container sitewide

[istandard]

I looked through a few potentially similar posts but none of the code I found worked for me. I am looking to remove the grey border around my containers in my main and sidebar areas. My site is white on white and it looks really bad in my opinion. My url is istandardproducers.com. I am also sending a secure not with my login info. Thank you in advance

[jade]

Hi there,

Please add this code in the custom CSS:

.site > .x-container.max.width {
    box-shadow: none;
}

Hope this helps.