react-lazyload VS animate.css

In this situation, lazy loading, a popular technique used to defer the loading of resources until needed, can be implemented to defer rendering a component unless the user scrolls down to bring it into the viewport. One of the most popular lazy loading libraries in React, react-lazyload, makes use of conditional rendering to render components only when they are scrolled into the viewport of the user's browser or, in other words, are visible to the user.

React LazyLoad is a library specifically built for that purpose. You just wrap your component, and this library takes care of the rest.

React-lazyload :

I'd you are using a frontend framework, you can use lazy loading that loads more content on scroll. For Vue: https://github.com/hilongjw/vue-lazyload For React: https://github.com/twobin/react-lazyload

Also, consider using react-lazyload or react-window or next.js dynamic import to handle your excessive dom size.

Animate.css

Animate.css (https://animate.style/)

Now, the content slide animation will come in later, as shown below: How about creating an altogether custom animation? Let’s make a bounce animation.

There are a few ways to create animations in React, but all of them fall into two broad categories: CSS animations, which change visual state by applying CSS rules; and, JavaScript animations, which use JavaScript to change the properties of the element. In either of those categories, you can either implement the animation from scratch, or you can use a library. On the CSS side, you can compose your animations with CSS rules, or you can use third-party libraries like Animate.css.

Use actual CSS/JS to make the effects. You can learn most of it if you search for CSS3 animations (Mozilla dev docs are a good option). You could also use a library like Animate.css

Animate.css: This CSS animation library offers different pre-built animations that can be easily applied to elements on a website. Different animations in the library, such as fades, slides, flips, and more, can be used to animate CSS Grid layouts.