JSFiddle - React, Tailwind, and code Playground

JavaScript

wp.blocks.BlockEdit( 'all', ( originalBlock ) => {
         const cssOptions= [
             {value: 'classes1', label: 'classes1'},
            {value: 'classes2', label: 'classes2'},
           {value: 'classes3', label: 'classes3'},
          {value: 'classes4', label: 'classes4'},
       ];
	attributes: {
		className: {
			type: 'string',
		},
	},

	edit( props ) {
		const element = originalBlock.save( props );

		const { attributes, setAttributes } = props;
		const { className } = attributes;

                function addClassName(className ) {
                    props.setAttributes({className : className });
                 }
 
		return [
			element,
			<InspectorControls>
				<SelectControl
					label={ __( 'Additional CSS Class' ) }
                                        select={className}
					options={cssOptions}
					onChange={ addClassName }
				/>
			</InspectorControls>
		];
	},

	save( props ) {
		const element = originalBlock.save( props );
		const { className } = props.attributes;

		return cloneElement( element, {
			className: [ element.props.className || '', className ].join( ' ' ),
		} );
	},
} );