* {
    margin: 0;
}

:root {
    font-family: monospace;
    font-size: 1.5rem;
    background-color: black;
    color: greenyellow;
}

html, body {
    height: 100%;
    overflow: hidden; /* ← important */
}

#matrix {
    width: 100vw;
    height: 100vh;
}

input {
    border: 1px solid greenyellow;
    background-color: black;
    font-size: 1.25rem;
    color: greenyellow;
    padding: 5px 10px;
    font-family: monospace;
    text-transform: uppercase;
    /* width: 100%; */
}

form {
    height: 100dvh;
    width: 95vw;
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    /* align-items: center; */
    justify-content: center;
    gap: 25px;
}

button {
    border: none;
    background-color: greenyellow;
    font-family: monospace;
    cursor: pointer;
    font-size: 1.125rem;
    width: fit-content;
    padding: 5px 25px;
}

button:hover {
    border: none;
    background-color: white;
    font-family: monospace;
    cursor: pointer;
    font-size: 1.125rem;
    width: fit-content;
    padding: 5px 25px;
}