Change the style of a modal using react-modal

Question

I have this object, with the styles I want for the modal:

const customStyles = {
  content: {
    top: '35%',
    left: '50%',
    right: 'auto',
    bottom: 'auto',
    marginRight: '-50%',
    width: '60%',
    transform: 'translate(-40%, -10%)',
  },
};

Then I pass that styles to the modal like this:

            <Modal
              isOpen={this.state.modalIsOpen}
              onRequestClose={this.closeModal}
              style={customStyles}
            >

And it works fine but I want to pass a class, not create a customStyle object inside the component.

I try something like this, first creating the modal class:

.modal {
  top: '35%';
  left: '50%';
  right: 'auto';
  bottom: 'auto';
  marginRight: '-50%';
  width: '60%';
  transform: 'translate(-40%, -10%)';
}

and then:

            <Modal
              isOpen={this.state.modalIsOpen}
              onRequestClose={this.closeModal}
              className="modal"
            >

But it didn't work. What am I doing wrong?

Answer 1

It should be portalClassName:

<Modal
  isOpen={this.state.modalIsOpen}
  onRequestClose={this.closeModal}
  portalClassName="modal"
>