teste.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>
        *
        {
            margin: 0;
        }
        .banner {
            background-color: black;
            width: 100vw;
            height: 100vh;
        }

        .banner__titulo {
            font-size: 100px;
            color: white;
            animation-name: efeito;
            animation-duration: 1s;
            animation-timing-function:ease-in;
            opacity: 1;
            position: absolute;
            left: 100px;
            top: 170px

        }

        @keyframes efeito {
            from {
                opacity: 0;
                left: 140px;
            }

            to {
                opacity: 1;
                left: 100px;
            }
        }
    </style>
</head>

<body>
    <div class="banner">
        <h1 class="banner__titulo">
            Meu Título
        </h1>
    </div>
</body>

</html>