* {
    font-family: sans-serif;
}

form {
    position: fixed;
    top: 50vh;
    left: 50vw;
    transform: translate(-50%, -50%);
    background: darkgoldenrod;
    color: whitesmoke;
    padding: 2em;
}

input {
    padding: .5em;
    border-radius: .5em;
    border: none;
    margin: .5em;
}
input[type="submit"] {
    background: goldenrod;
    color: black;
}

.h {
    display: none;
}