ega-deck.gl transition editor</h1>
        <button id="view-type-button" onclick="transition.toggleView()">2D / 3D</button>
    </header>
    <div id="split-left" class="double">
        <div class="textform">
            <textarea id="text1"></textarea>
            <button onclick="transition.getText('text1')">Apply this spec</button>
        </div>
        <div class="textform">
            <textarea id="text2"></textarea>
            <button onclick="transition.getText('text2')">Apply this spec</button>
