code: function createDeclaration(prop, value, node) {
  		let decl = postcss.decl({
  			prop: prop,
  			value: value,
  			source: node.source
  		});
  
  		return decl;
  	}
docs: Create postcss declaration with meta info from mixin
  
  @param {string} prop
  @param {string|number} value
  @param {object} node - postcss.Mixin
  @returns {Declaration}