@media screen and (max-width: 768px) {
    body {
        background-color: #FFFFFF;
        background-image: none;
        justify-content: center;
    }

    form {
        width: 100%;
    }

    form input[type="text"],
    form input[type="password"],
    form input[type="submit"] {
        padding: 1rem;
        margin: 1rem auto;
        border: 2px solid #000000;
    }
}