           <span class="ph1 warning">warning</span>
            <span class="ph1 error">error</span>
            <span class="ph1 black">black</span>
            <span class="ph1 white bg-black">white</span>
            <span class="ph1 gray">gray</span>
            <h4>Background Colors</h4>
            <div class="p1 white bg-accent">bg-accent</div>
            <div class="p1 white bg-info">bg-info</div>
            <div class="p1 white bg-success">bg-success</div>
            <div class="p1 white bg-warn