Validating form fields on the client

Change-Id: I33a0c2417d73d7974e4dc0c2f9f77f3984508606
diff --git a/src/app/core/validation/validation.scss b/src/app/core/validation/validation.scss
new file mode 100644
index 0000000..fea42c3
--- /dev/null
+++ b/src/app/core/validation/validation.scss
@@ -0,0 +1,7 @@
+xos-validation {
+  display: block;
+}
+
+xos-field + xos-validation {
+  margin-top: 10px;
+}
\ No newline at end of file