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

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


body{
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 16px;
    background-color: var(--color-bg);
    
    
}

#bt-verde{
    background-color: green;
}

#bt-vermelho{
    background-color: rgb(126, 6, 6);
}