Here we few cool CSS Hover animations found on internet....

Here are the 10 cool CSS animations

1. Bubble coloring button

Code:
https://codepen.io/comehope/pen/eKqZjy

1. Animated button with rainbow hover #pride

Code:
https://codepen.io/althi/pen/eKdmaa

1. Button Hover Effect

Code:
https://codepen.io/dan10gc/pen/LzLwWp

1. Stylized Buttons

Code:
https://codepen.io/perry_nt/pen/eVboze

1. Click Me

Code:
https://codepen.io/avstorm/pen/oqKbLq

1. BUTTON HOVER EFFECT

Code:
https://codepen.io/abadu/pen/YxJgoe

1. CSS Background Color Change on Hover

Code:
https://codepen.io/ianfarb/pen/neEWbP

1. EC card hover

Code:
https://codepen.io/jorgesanes10/pen/QdMEXr

1. Caption Hover Effects

Code:
https://github.com/codrops/CaptionHoverEffects

1. Tessellations eCommerce

Code:
https://codepen.io/andybarefoot/pen/VwZjVma

For More CSS Hover Animations Follow bellow links:
https://freefrontend.com/css-button-hover-effects/
https://csshint.com/css-hover-effects/

Thanks
Happy Coding :)