pan class="nav-unit-title-s"> Expectation </span>
                    </div>
                    <div class="nav-unit-wrapper-s tile3">
                        <img src="../img/tiles/1-3.png" class="nav-unit-tile-s">
                        <span class="nav-unit-title-s"> Variance </span>
                    </div>
                </div>
                <div id="cp" class="current">
                    <div class="nav-unit-wrapper-s tile1">
                        <img src="../img/tiles/2-1.png" class="nav-