Move test fixtures to samples/

samples/scss/screen.scss

@@ -0,0 +1,14 @@
+$blue: #3bbfce;
+$margin: 16px;
+
+.content-navigation {
+  border-color: $blue;
+  color:
+    darken($blue, 9%);
+}
+
+.border {
+  padding: $margin / 2;
+  margin: $margin / 2;
+  border-color: $blue;
+}