Layout/Style adjustments

wwwroot/css/main.css

@@ -21,6 +21,19 @@ header {
   overflow: hidden;
 }
 
+.page-content {
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  overflow-y: auto;
+  flex: 1;
+}
+
+.page-content > * {
+  width: 600px;
+  max-width: 100%;
+}
+
 .back-btn {
   background: none;
   border: none;