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CSS

To display the gradient in browsers that do not support CSS gradients, use a configuration variable to set support SVG

Not entirely sure what is being asked here? the vendor prefix is as follows, but I'm lost as to which variable is being called

// Imports
@import "compass/css3";

// Variables
body{
@include background (linear-gradient(#3d69b5,#1a335e));
}

/*challenge section*/

body {
-svg{?}
}