styled course about page registration error message

lms/static/sass/multicourse/_course_about.scss

@@ -158,12 +158,22 @@
           }
 
           #register_error {
+            float: left;
             background: $error-red;
             border: 1px solid rgb(202, 17, 17);
             color: rgb(143, 14, 14);
             display: none;
             padding: 12px;
             margin-top: 5px;
+            
+            a {
+              color: white;
+              text-decoration: underline;
+              
+              &:hover {
+                text-decoration: none;
+              }
+            }
           }
         }
       }