* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    font-family: monospace;
    font-size: calc(1vmin + 2px);
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
}


h1 {
    margin: 0 10vw;
    max-width: 50ch;
    text-align: center;
    font-size: 5rem;
}

#forma {
    display: flex;
    flex-direction: column;
    font-size: 3rem;
}

input {
    min-height: 3rem;
    font-size: 3rem;
    border: none;
    outline: none;
    border-bottom: 2px black solid;
    font-family: inherit;
    color: gray;
}

input[type="submit"] {
    margin-top: 2rem;
    background: none;
    border: none;
    cursor: pointer;
    color: black;
}

input[type="submit"]:active {
    background: #ddd;
}

input:focus[type="number"] {
    border-bottom: 2px hsl(204, 100%, 36%) solid;
    color: black;
}

div, p {
    font-size: 3rem;
    font-weight: bold;
    color: gray;
    text-align: center;
}

label {
    margin-top: 1rem;
}

span {
    color: black;
}