* {
    font-family: sans-serif;
}

.container {
    width: fit-content;
    margin: auto;
    border-radius: 0.4em;
    box-shadow: 0px 0px 10px black;
    padding: 0.5em;
}

input[type="text"] {
    border: 2px solid black;
    border-radius: 0.4em;
    padding: 0.25em;
}

select {
    border: 2px solid black;
    border-radius: 0.4em;
    padding: 0.25em;
}

input[type="text"].invalid {
    border: 2px solid red;
    border-radius: 0.4em;
    padding: 0.25em;
}

.error {
    text-align: center;
    color: red;
}

.genbtn {
        border-radius: 0.4em;
    padding: 0.25em;
    background-color: green;
    color: white;
    border: 2px solid greenyellow;
    margin: auto;
}