@@ -17,16 +17,22 @@
     body {
       margin: 0;
     }
+
     *, *:before, *:after {
       box-sizing: inherit;
     }
 
     .panels {
+      display: flex;
+      flex-direction: row;
       min-height:100vh;
       overflow: hidden;
     }
 
     .panel {
+      display: flex;
+      flex-direction: column;
+      flex: 1;
       background:#6B0F9C;
       box-shadow:inset 0 0 0 5px rgba(255,255,255,0.1);
       color:white;
@@ -54,8 +60,17 @@
       margin:0;
       width: 100%;
       transition:transform 0.5s;
+      display: flex;
+      flex: 1 0 auto;
+      justify-content: center;
+      align-items: center;
     }
 
+    .panel > *:first-child { transform: translateY(-100%) }
+    .panel.open-active > *:first-child { transform: translateY(0%) }
+    .panel > *:last-child { transform: translateY(100%) }
+    .panel.open-active > *:last-child { transform: translateY(0%) }
+
     .panel p {
       text-transform: uppercase;
       font-family: 'Amatic SC', cursive;
@@ -67,6 +82,7 @@
     }
 
     .panel.open {
+      flex: 5;
       font-size:40px;
     }
 
@@ -107,6 +123,20 @@
   </div>
 
   <script>
+    const panels = document.querySelectorAll('.panel');
+
+    panels.forEach(panel => panel.addEventListener('click', toggleOpen))
+    panels.forEach(panel => panel.addEventListener('transitionend', toggleActive))
+
+    function toggleOpen() {
+      this.classList.toggle('open')
+    }
+
+    function toggleActive(e) {
+      if (e.propertyName.includes('flex')) {
+        this.classList.toggle('open-active')
+      }
+    }
 
   </script>