@keyframes left_move {
from {left: 0px;}
100% {left: 200px;}
}
div {
width: 100px;
height: 32px;
margin-top:5px;
background: pink;
position: relative;
animation-name: left_move;
animation-duration: 2s;
animation-iteration-count: infinite;
}
.ex1 {
animation-direction: normal;
}
.ex2 {
animation-direction: reverse;
}
.ex3 {
animation-direction: alternate;
}
.ex4 {
animation-direction: alternate-reverse;
}
<!DOCTYPE html>
<html lang="ko">
<head></head>
<body>
<div class="ex1">normal</div>
<div class="ex2">reverse</div>
<div class="ex3">alternate</div>
<div class="ex4">alternate-reverse</div>
</body>
</html>