.btn-group {
    margin: auto;
    width: 100px;
    margin-top: 500px;
    padding: 10px;
}

.description-message {
    text-align: center;
    display: table;
    margin-right: auto;
    margin-left: auto
}

.btn btn-light {
    text-align: center;
    display: table;
    margin-right: auto;
    margin-left: auto
}

.btn-group {
    bottom: 0px;
    display: flex;
    justify-content: center;
    align-items: center;
}