this.$createSpin({
  tip: 'Loading message...',
  style: `
   position: fixed;
   top: 100px;
   left: 50%;
   transform: translateX(-50%);
  `,
})

this.$createModal<Omit<ModalConfig, 'content'>>({}, (h) => ({
  default:
    () => `
    You can customize modal body text by the current situation.
    This modal will be closed immediately once you press
    the OK button.`,
})).show()