.animation {
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -ms-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

#mfa_code{
    text-align:center;
    padding:0px;
    font-size:15px;
}

.card {
    width: 100%;
    height: 100%;
    position: absolute;
    background-color: #304d5f !important;
   
    -webkit-transition: -webkit-transform 0.4s;
    -moz-transition: -moz-transform 0.4s;
    -o-transition: -o-transform 0.4s;
    transition: transform 0.4s;
    -webkit-transform-style: preserve-3d;
    -moz-transform-style: preserve-3d;
    -o-transform-style: preserve-3d;
    transform-style: preserve-3d;
}

    .card.flipped {
        background-color: #304d5f !important;
        -webkit-transform: rotateY( 180deg );
        -moz-transform: rotateY( 180deg );
        -o-transform: rotateY( 180deg );
        transform: rotateY( 180deg );
    }

    .card .front,
    .card .back {
        background-color: #304d5f!important;
        position: absolute;
        -webkit-backface-visibility: hidden;
        -moz-backface-visibility: hidden;
        -o-backface-visibility: hidden;
        backface-visibility: hidden;


        box-shadow: 3px 5px 20px 2px rgba(0, 0, 0, 0.25);
    }





    .card .back {
        background-color: #304d5f !important;
        -webkit-transform: rotateY( 180deg );
        -moz-transform: rotateY( 180deg );
        -o-transform: rotateY( 180deg );
        transform: rotateY( 180deg );
    }

.front, .back {
    width: 100%;
}