em">
                                <label for="perspective-near">near</label>
                                <input id="perspective-near" type="range" min="0.1" max="100" step="0.1" value="0.1">
                            </div>
                            <div class="control-item">
                                <label for="perspective-far">far</label>
                                <input id="perspective-far" type="range" min="0.1" max="100" step="0.1" value="100">
                            </div>