added login failed message (remains register message); installed flood_control contrib module

web/themes/custom/materiotheme/assets/dist/main.css

@@ -1263,7 +1263,7 @@ header[role="banner"] {
       background-color: #fff;
       overflow: hidden;
       width: 11em;
-      height: 0px;
+      max-height: 0px;
       padding: 0.01em 1em;
       box-sizing: content-box;
       transition: all 0.4s ease-in-out;
@@ -1271,10 +1271,11 @@ header[role="banner"] {
       position: absolute;
       right: 0;
       top: 1.7em;
-      box-sizing: content-box; }
+      box-sizing: content-box;
+      z-index: 100; }
     header[role="banner"] #block-userlogin:hover > section {
       transition-delay: 0s;
-      height: 12em;
+      max-height: 20em;
       padding: 1em 1em;
       box-shadow: 0 0 10px #ccc; }
     header[role="banner"] #block-userlogin .form-item {
@@ -1306,6 +1307,12 @@ header[role="banner"] {
         margin: 0; }
         header[role="banner"] #block-userlogin .item-list ul li a {
           font-size: 0.756em; }
+    header[role="banner"] #block-userlogin span.login-message {
+      color: red;
+      font-size: 0.693em;
+      line-height: 1.2;
+      display: block;
+      padding: 0 0 0.8em 0; }
   header[role="banner"] #block-userblock h2 {
     display: none; }
   header[role="banner"] #block-userblock a {
@@ -2375,6 +2382,12 @@ article.card {
         display: block;
         max-width: 16em;
         font-size: 0.693em; }
+      #pricing-modal-login-register #login-register > section form span.login-message {
+        color: red;
+        font-size: 0.693em;
+        line-height: 1.2;
+        display: block;
+        padding: 0 0 0.8em 0; }
 
 #main-content form.commerce-checkout-flow {
   max-width: 641px; }