使用 react-modal 更改模态的样式

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

I think there might be a billion ways to do this, here is just one that uses CSS Modules. If you put your styles into a separate .css.js file you can import it in your module:

/// modal.css.js ///
export default {
  modal: {
    top: '35%',
    left: '50%',
    right: 'auto',
    bottom: 'auto',
    marginRight: '-50%',
    width: '60%',
    transform: 'translate(-40%, -10%)'
  },
  greenText: {
    color: 'rgb(0,255,100)'
  },
  style3: {
    marginRight: '-25%'
  }
}

You can then assign your styles by accessing them as you would with any object and apply them to your component on the style attribute

import styles from './modal.css.js'

...

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

if you want to apply multiple styles to your component you give the style attribute an array. This would allow you to apply styles from multiple imported style objects.

<Modal
  isOpen={this.state.modalIsOpen}
  onRequestClose={this.closeModal}
  style={[styles.modal, styles.greenText]}
>

Answer 2

It should be portalClassName:

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

Answer 3

 <ReactModal id={this.state.dialogId}
              isOpen={showDialog}
              onRequestClose={this.onCancel.bind(this)}
              className={`shadow p-4`}
              style={{
                overlay: {
                  position: 'fixed',
                  zIndex: 1020,
                  top: 0,
                  left: 0,
                  width: '100vw',
                  height: '100vh',
                  background: 'rgba(255, 255, 255, 0.75)',
                  display: 'flex',
                  alignItems: 'center',
                  justifyContent: 'center',
                },
                content: {
                  background: 'white',
                  width: '45rem',
                  maxWidth: 'calc(100vw - 2rem)',
                  maxHeight: 'calc(100vh - 2rem)',
                  overflowY: 'auto',
                  position: 'relative',
                  border: '1px solid #ccc',
                  borderRadius: '0.3rem',
                }}}
              appElement={document.getElementById('root') as HTMLElement}> ... </ReactModal>

Answer 4

i tried this way and it works fine with me i added a simple class to the react modal tag

 <Modal
            size="sm"
            aria-labelledby="contained-modal-title-vcenter"
            className='modalStyle'
            centered
            show={prescriptionPreview}
            onHide={() => setPrescriptionPreview(false)}
        >

then i went to app.css and selected like this way

.modalStyle .modal-dialog 

and style it whatever you want