Messages slide-in animation

Just a little detail, make the messages slide-in once they load. Pretty much what this piece of code can do

1. @keyframes slide-up {
2.     0% {
3.         opacity: 0;
4.         transform: translateX(20px);
5.     }
6.     100% {
7.         opacity: 1;
8.         transform: translateX(0);
9.     }
10. }
11. .message-2qnXI6 {
12.     animation: slide-up 0.4s ease;
13. }