antd full screen dialog

main.css

@media screen and (max-width: 800px) {
  .ant-modal-mask {
    animation-duration: 0s !important; /* fade */
  }

  .ant-modal-content {
    height: 100%;
  }

  .ant-modal {
    animation-duration: 0s !important; /* zoom */

    position: fixed;
    display: contents;

    margin: 0;
    padding: 0;

    bottom: 0;
    right: 0;
    top: 0;
    left: 0;

    width: 100vw;

    height: 100vh;
    min-height: 100vh;
  }
}