         </div>
          </div>
          <textarea
            id="ch3"
            rows="2"
            class="font-mono input"
            placeholder="o4v15cdefrgb+..."
          ></textarea>
        </div>

        <div>
          <div class="flex items-center space-x-4 mb-2">
            <label for="ch4" class="text-xl">CH4</label>
            <div class="flex items-center space-x-2">
              <button
                id="solo4_btn"
                type="button"
                class="toggle"
   