Adding below command with css resolved my issue
npm install semantic-ui-react semantic-ui-css
After install, import the minified CSS file in your app's entry file:
Inside index.js or any file where carousel is used
import 'semantic-ui-css/semantic.min.css'
...
.image-item {
padding-left: 10px;
}
...
....
....
...
<Carousel
....
itemClass="image-item"
...
>