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

web/themes/custom/materiotheme/assets/styles/main.scss

@@ -51,7 +51,7 @@ header[role="banner"]{
       background-color: #fff;
       overflow: hidden;
       width:11em;
-      height:0px;
+      max-height:0px;
       padding:0.01em 1em;
       // margin:0 0 0 -1em;
       box-sizing:content-box;
@@ -62,11 +62,12 @@ header[role="banner"]{
       right:0;
       top:1.7em;
       box-sizing: content-box;
+      z-index:100;
     }
     &:hover{
       &>section{
         transition-delay: 0s;
-        height:12em;
+        max-height:20em;
         padding:1em 1em;
         box-shadow: 0 0 10px #ccc;
       }
@@ -113,6 +114,13 @@ header[role="banner"]{
         }
       }
     }
+    span.login-message{
+      color: red;
+      font-size: 0.693em;
+      line-height: 1.2;
+      display: block;
+      padding: 0 0 0.8em 0;
+    }
   }
 
   // non-vue userblock
@@ -1663,6 +1671,14 @@ article.card{
           max-width: 16em;
           font-size: 0.693em;
         }
+
+        span.login-message{
+          color: red;
+          font-size: 0.693em;
+          line-height: 1.2;
+          display: block;
+          padding: 0 0 0.8em 0;
+        }
       }
     }
     section.login{