project structure refactoring

app/views/templates/loading.css

@@ -0,0 +1,20 @@
+.loader {
+  border: 16px solid #f3f3f3;
+  border-radius: 50%;
+  border-top: 16px solid #3498db;
+  width: 120px;
+  height: 120px;
+  -webkit-animation: spin 2s linear infinite; /* Safari */
+  animation: spin 2s linear infinite;
+}
+
+/* Safari */
+@-webkit-keyframes spin {
+  0% { -webkit-transform: rotate(0deg); }
+  100% { -webkit-transform: rotate(360deg); }
+}
+
+@keyframes spin {
+  0% { transform: rotate(0deg); }
+  100% { transform: rotate(360deg); }
+}