@media (max-width: 600px)  {
    #choice-players{
        width: 95%;
    }
}

@media (min-width: 601px) {
    #choice-players{
        width: 80%;
    }
}

#select-player-buttons a{
    margin: 2%;
}

#valid-player-name {
    width: 67%;
}

#add-player {
    width: 25%;
}