form {
    display: flex;
    height: 70vh;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

html {
    background-image: url("https://cdn.pixabay.com/photo/2023/12/20/07/04/mountains-8459056_640.jpg");
    background-size: 100vw 100vh;
}

a {
    background-color: rgba(128, 128, 128, 0.815);
    padding: 10px;
    border-radius: 10px;
}

input {
    margin: 2px;
}

h3 {
    background-color: rgba(255, 255, 255, 0.815);
    padding: 10px;
    border-radius: 10px;
}

input {
    font-size: 15px;
}

input[type="submit"] {
    font-size: 20px;
}