// I made it by directly setting styles to slide div

<div key={index} style={{'padding': '5px'}}><img src={img} onClick={onClick}/></div>

​

// another example 

const contentStyle = {

  margin: '0 5px',

};

​

<Carousel slidesToShow={4.2} draggable dots={false} infinite={false}>

  {slides.map((slide) => (

    <div key={slide}>

      <h3 style={contentStyle}>{slide}</h3>

    </div>

  ))}

</Carousel>