@reach/popover

import * as React from "react";
import Popover, { positionDefault } from "@reach/popover";

function Example() {
  const ref = React.useRef(null);
  const [value, setValue] = React.useState("");
  return (
    <div>
      <label>
        <span>Type for a special message</span>
        <input
          type="text"
          ref={ref}
          onChange={(event) => setValue(event.target.value)}
        />
      </label>

      {value.length > 0 && (
        <Popover targetRef={ref} position={positionDefault}>
          <div>
            <p>Whoa! Look at me!</p>
          </div>
        </Popover>
      )}
    </div>
  );
}