问反应模式动态调整大小

EN

ReactModal.setAppElement('#main');

class ExampleApp extends React.Component {
  constructor () {
    super();
    this.state = {
      showModal: false
    };

    this.handleOpenModal = this.handleOpenModal.bind(this);
    this.handleCloseModal = this.handleCloseModal.bind(this);
  }

  handleOpenModal () {
    this.setState({ showModal: true });
  }

  handleCloseModal () {
    this.setState({ showModal: false });
  }

  render () {
    return (
      <div>
        <button onClick={this.handleOpenModal}>Trigger Modal</button>
        <ReactModal 
           isOpen={this.state.showModal}
           contentLabel="onRequestClose Example"
           onRequestClose={this.handleCloseModal}
           className="Modal"
           overlayClassName="Overlay"
        >
          <p>Modal text!</p>
          <button onClick={this.handleCloseModal}>Close Modal</button>
        </ReactModal>
      </div>
    );
  }
}

const props = {};

ReactDOM.render(<ExampleApp {...props} />, document.getElementById('main'))

Yellow color = large screen
Green color = medium screen
Gray color = Mobile

"<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">"

.ReactModal__Overlay {
    z-index: 99;
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background-color: rgba(255,255,255,0.75);
}

.ReactModal__Content {
    position: absolute;
    left: 2.5rem;
    right: 2.5rem;
    top: 2.5rem;
    bottom: 2.5rem;
    background-color: #fff;
    box-shadow: 0 0 10px 0 rgba(0,0,97,0.5);
    overflow: auto;
    border-radius: 4px;
    outline: none;
}

1. large screen, modal max-width 200px
@media screen and (min-width: 900px) {
    max-width: 200px;
    left: calc(50% - 100px);
}

2. medium screen, modal about 80% screen width
@media screen and (min-width: 475px) and (max-width: 900px) {
    left: 10%;
    right: 10%;
    top: 10%;
    bottom: 10%;
}

3. mobile screen, modal full width
@media screen and (max-width: 475px) {
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
}

..ReactModal__Overlay {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.7);
    z-index: 999;
}

// this is better to use transform for center the modal and width 
.ReactModal__Content {
    position: absolute; // if it's inside your ReactModal__Overlay if not use Fixed and a higher z-index.
    width: 100%;
    height: 100%;
    left: 50%;
    top: 50%;
    overflow: auto;
    background-color: #fff;
    -webkit-transform: translate(-50,-50%);
    transform: translate(-50,-50%);
}

@media screen and (min-width: 992px) { // desktop
    .modal.modal-content {
        max-width: 200px;
        max-height: 80%;
    }
}

@media screen and (min-width: 426px) and (max-width: 991) { // tablet size
    .modal.modal-content {
        max-width: 80%;
        max-height: 80%;
    }
}

@media screen and (max-width: 425px) { // mobile size
    .modal.modal-content {
        max-width: 100%;
        max-height: 100%;
    }
}