how to add in animations in html code example

Example 1: adding animation to images css

basic animation drop

//drop is variable named for the animation

@keyframes drop {
	0% {
		opacity: 0;
		transform: translateY(-80px);
	}
	100% {
		opacity: 1;
		transform: translateY(0px);
	}
}

img {
animation: drop 500ms ease;
}

Example 2: webkit animation

@-webkit-keyframes pulse {
 0% {
   background-color: red;
   opacity: 1.0;
   -webkit-transform: scale(1.0) rotate(0deg);
 }
 33% {
   background-color: blue;
   opacity: 0.75;
   -webkit-transform: scale(1.1) rotate(-5deg);
 }
 67% {
   background-color: green;
   opacity: 0.5;
   -webkit-transform: scale(1.1) rotate(5deg);
 }
 100% {
   background-color: red;
   opacity: 1.0;
   -webkit-transform: scale(1.0) rotate(0deg);
 }
}

.pulsedbox {
 -webkit-animation-name: pulse;
 -webkit-animation-duration: 4s;
 -webkit-animation-direction: alternate;
 -webkit-animation-timing-function: ease-in-out;
}