Linear gradients in the new version 7.8.2

[monsterit]

Hi,

 

We have some linear gradients in our theme files. 

section#main-body {
    margin: 0;
    padding: 20px 0;
    min-height: 350px;
    background: linear-gradient(to bottom, #30e9da , #0957fd);
}

this is all.css however in the new all.css it coming up an error that it's not supported. Does anyone know how to change the heading and footer to gradients please?

[brian!]

is it not an option for you to add the code to custom.css instead ??