How do you combine plain CSS and Sass file with Laravel Elixir? If I run the following code then two files "all.css" and "app.css" is generated on the public/CSS/ directory. However, I only want to generate one CSS file which would be all.css. Do you guys know any tricks to do it?
elixir(function (mix) {
    mix.sass([
            'app.scss'
        ])
        .styles([
            'owl.carousel.css'
        ]);
})
 
     
    