#main {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#number, #eroare {
    display: flex;
    align-items: center;
    justify-content: center
}

#eroare {
    color: red;
    font-weight: bold;
}

#userinput{
    margin-top: 30px;
    display: block;
} 

#castig {
    display: flex;
    align-items: center;
    flex-direction: column;
}