using aos in bootstrap code example
Example 1: aos
<link rel="stylesheet" href="https://unpkg.com/aos@next/dist/aos.css" />
Example 2: aos css animation
<div data-aos="zoom-in-right"></div>
<link rel="stylesheet" href="https://unpkg.com/aos@next/dist/aos.css" />
<div data-aos="zoom-in-right"></div>