#tf_password {
                        font-family: HelveticaNeue, serif;
                        font-size: 1.5em;

                    }
                    #tf_url {
                        font-family: HelveticaNeue, serif;
                        font-size: 1.5em;

                    }
                    #tf_pawoField {
                        font-family: Courier New, serif;
                        font-size: 2em;
                        text-align: center;
                        color: black;
                    }

.button {
    background-color: darkgray;
    border-bottom-left-radius: 10px;
    border-bottom-right-radius: 10px;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    margin: 0.7em;
    min-width: 10em;
    min-height: 2.1em;
}
.input-group-addon {
    min-width: 75px;
}