xtremely small.</p>
        <p>Meanwhile, a lot of projects generate IDs in small numbers. For those projects, the ID length could be reduced without risk.</p>
        <p>This calculator aims to help you realize the extent to which the ID length can be reduced.</p>
        <div id="calc">
          <div class="calc-input">
            <label for="alphabet">Alphabet:</label>
            <textarea id="alphabet" rows="4" cols="64" spellcheck="false"></textarea>
            <span id="counter">0/256</span>
     