.cipher {
    writing-mode: horizontal-tb;
    font-family: monospace;
    cursor: default;
}

.ciphertd:hover {
    background-color:#dddddd;
}

.AB {
    writing-mode: horizontal-tb;
    font-family: monospace;
}

.plain {
    writing-mode: horizontal-tb;
    font-family: monospace;
}

.block {
    display: inline-block;
}

.plaintd {
    text-align: center;
}

.block {
    border: 1pt solid;
}

.count {
    display: none;
}