Avenue Footer Background Colour

Hi 

I'm looking to alter the background colour of the footer using the Avenue template. I want it to be a different colour to the rest of the website background colour. It doesn't seem to allow this in site styles - any suggestions of how I can do this?

Thank you 

Add to Home > Design > Custom CSS

/* Footer Full width and background color */
#canvas {
    max-width: 100%;
    position: relative;
}
#footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 60px;
    background: gray;
}
section#page {
    margin-bottom: 150px;
}

Reference: https://beaverhero.com/avenue-squarespace/#Footer_Background_Color_Footer_Full-width

Thanks but I'm afraid this didn't work. Which section do I need to input the code into?!

2 minutes ago, IB1988 said:

Thanks but I'm afraid this didn't work. Which section do I need to input the code into?!

Add to Home > Design > Custom CSS

Thank you - that worked!

@IB1988 You can Like & Upvote, other members can use if they know it worked. Thanks.