fadeout-left-box.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        
        div {
            animation: myAnim 2s ease 0s 1 normal forwards;
            height: 200px;
            width: 200px;
            margin: 200px auto;
            background: #808080;
            border-radius: 20px;
        }
        
        @keyframes myAnim {
	0% {
		opacity: 1;
		transform: translateX(0);
	}

	100% {
		opacity: 0;
		transform: translateX(50px);
	}
}

    </style>
</head>
<body>
    <div></div>
</body>
</html>