fix(style): Flexible alert styles

front/src/components/ui/alert.scss

@@ -33,10 +33,15 @@
   //   }
   // }
 
-  padding: 0.625rem 2rem;
+  padding: 2rem 2rem;
   line-height: 1.2;
   display: flex;
-  align-items: center;
+  flex-direction: column;
+
+  h4 {
+    margin-top: 0;
+    margin-bottom: 1.2em;
+  }
 
   > .actions {
     margin-left: auto;