first commit

media/templates/site/cassiopeia/scss/blocks/_alerts.scss

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+// Alerts
+
+.j-main-container {
+  .alert {
+    margin: .75rem;
+  }
+
+}
+
+.alert-heading {
+  font-size: $h4-font-size;
+}
+
+@keyframes fadeIn {
+
+  from {
+    opacity: 0;
+    transform: translateY(-1rem);
+  }
+
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}