content: import React from 'react';
  import classNames from 'classnames';
  
  export default class NavButton extends React.Component {
    render() {
      const className = classNames(
        'css-button-' + this.props.direction,
        this.props.disabled && 'css-button-disabled'
      );
      return <button
        className={className}
        disabled={this.props.disabled}
        onClick={this.props.onClick}></button>;
    }
  }
  