body {
    padding: 20px;
}

.card {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease-in-out;
}

.card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.card-header {
    background-color: #343a40;
    color: #fff;
}

.card-header h5 {
    margin-bottom: 0;
}

.card-body {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    height: 800px;
}

.txt-info {
    height: 400px;
}

.cipher {
    height: 300px;
}

.btn-cipher {
    margin-top: 10px;
}

.small-cells td {
    padding-top: 0.2rem;
    padding: 0.2rem;
    font-size: 0.8rem;
    text-align: center;
  }