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

:root {
    --bg-color: gray;
}

body {
    height: 100dvh;
    display: grid;
    place-content: center;
    transition: 1s;
}


.container {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 300px;
}

.container input {
    font-size: 2rem;
    text-align: center;
}

.container button {
    padding-block: 6px;
    font-size: 1rem;
    justify-content: space-between;
}

.cor {
    background-color: var(--bg-color)
}