How to Check For Support in CSS?

// Use the @supports CSS at-rule for feature queries

@supports (mix-blend-mode: overlay) {
    .blending {
        mix-blend-mode: overlay;
    }
}

// The method accepts two parameters:
// • the CSS property to check
// • the value of the CSS property
// it will return either true or false, based on whether the feature is supported
CSS.supports('mix-blend-mode', 'overlay');