Validation work

web/static/index.css

@@ -132,8 +132,7 @@ body {
     margin: auto;
 }
 
-#newPostForm button,
-#newThreadForm button {
+#newPostForm button {
     display: block;
     margin-left: auto;
 }

web/static/index.js

@@ -13,6 +13,11 @@ function isOffScreen(el) {
     );
 }
 
+function isHttpWarningStatus(code) {
+    const warningStatuses = [429, 400, 413];
+    return warningStatuses.includes(code);
+}
+
 function insertAfter(referenceNode, newNode) {
     referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
 }