body {
    background: #222;
    color: white;
    text-align: center;
}
.card, .holder {
    width: 100px;
    height: 100px;
    margin: 10px;
    display: inline-block;
    font-size: 40px;
    outline: 4px solid #FF2605;
    outline-offset: 1px;
 }
.holder {
    vertical-align: top;
    padding: 4px;
}
.front, .back {
   padding: 16px;
 }
.front {
    border: 2px white solid;
    background-color: #222;
    opacity: 0.1;
}
.banDiv {
    opacity: 0.4;
    border: none;
}
 .back {
    border: 4px white groove;
    background-color: red;
 }
.output, .outputLG {
    color: red;
    font-weight: bold;
}
.output, .outputBi {
    font-size: 18px;
    line-height: 18px;
}
.outputBi {
    color: white;

}
.outputLG {
    font-size: 30px;
}
.padTop {
    margin-top: 20px;
}
.txt-inverse {
    color: black;
}
.grow { transition: all .2s ease-in-out; }
.grow:hover { transform: scale(1.1); }
.np {
    padding: 1px;
}