how to get styles object into class type component that extends React.component about react-with-styles HOT 5 OPEN

import  React from "react";
import {css, withStyles} from "react-with-styles";

export class InputForm extends React.Component {

    constructor() {
        super()
    }

    render() {

        return (
                        <div className={"row"} style={{float:"left", clear:"both"}}>
                            <form  id="nameform">
                                First name: <input type="text" name="fname"></input>
                                Last name: <input type="text" name="lname"></input>
                            </form>
                                <button  {...css(styles.firstLink)} onClick={onClick}>Button</button>
                        </div>
        );
    }
}


export default withStyles(({ color }) => ({
    firstLink: {
        color: color.primary,
    },

    secondLink: {
        color: color.secondary,
    },
}))(InputForm);