#win_ajout_cheque {
    width: 33%;
    background-color: #d12c85;
    border-radius: 10px;
    text-align: center;
    padding: 10px;
    border: solid 1px #b2b2b2;
    margin: 0px auto;
}

#chequeId {
    border: solid 1px #767676;
    border-radius: 5px;
    font-size: 1.3em;
    padding: 0.1em;
    margin-bottom: 0.5em;
    text-align: center;
    background-color: #2a2a2a;
    color: #16ce24;
}

@media (max-width: 640px) {  
    #win_ajout_cheque {
        width: 90%;
    }
}