v3/packages/design-system/atoms/fader/Fader.tsx

import * as React from 'react';
import styled from 'styled-components';

export type FaderProps = {
  isVisible: boolean;
  children: React.ReactNode;
};

const FaderOpacityStyled = styled.div<Pick<FaderProps, 'isVisible'>>`
  opacity: ${(props) => (props.isVisible ? 1 : 0)};
  pointer-events: ${(props) => (props.isVisible ? 'unset' : 'none')};
  transition: opacity 0.35s ease-in-out;
`;

export const FaderOpacity = (props: FaderProps) => {
  return (
    <FaderOpacityStyled isVisible={props.isVisible}>{props.children}</FaderOpacityStyled>
  );
};

const FaderSlideStyled = styled.div<Pick<FaderProps, 'isVisible'>>`
  max-height: ${(props) => (props.isVisible ? '4em' : '0')};
  pointer-events: ${(props) => (props.isVisible ? 'unset' : 'none')};
  transition: max-height 0.35s ease-in-out;
  overflow: hidden;
  transform: translateZ(0);
`;

export const FaderSlide = (props: FaderProps) => {
  return (
    <FaderSlideStyled isVisible={props.isVisible}>{props.children}</FaderSlideStyled>
  );
};