@keyframes left_move {
from {left: 0px;}
20% {left: 200px;}
60% {left: 50px;}
75% {left: 100px;}
to {left: 0px;}
}
.ex1 {
width: 32px;
height: 32px;
background: red;
position: relative;
animation: left_move 5s infinite;
}
<!DOCTYPE html>
<html lang="ko">
<head></head>
<body>
<div class="ex1"></div>
</body>
</html>