html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

body {
    margin: 0;
    padding: 0;
    max-width: none;
    width: 100%;
    height: 100%;
    display: grid;
    align-items: center;
    justify-items: center;
    background: #ddd;
}

form {
    background: #fff;
    padding: 1em;
    width: auto;
    display: grid;
    grid-template-columns: auto;
    grid-gap: 0.5em;
}

input, button {
    margin: 0;
}

.error {
    font-family: "Libre Franklin", sans-serif;
    font-weight: bold;
    color: red;
}