2FA fixes for login modal (#12221)

app/assets/stylesheets/desktop/login.scss

@@ -180,6 +180,19 @@
   }
 }
 
+.login-modal.second-factor.modal-body {
+  max-width: 30em;
+  .login-left-side {
+    width: 100%;
+    #login-form {
+      margin: 2em 0 0 0;
+    }
+  }
+  #new-account-link {
+    display: none;
+  }
+}
+
 // styles used on the
 // create account
 // modal only

app/assets/stylesheets/mobile/login.scss

@@ -148,6 +148,14 @@
   }
 }
 
+.d-modal .login-modal {
+  &.second-factor + .modal-footer {
+    #new-account-link {
+      display: none;
+    }
+  }
+}
+
 .login-modal:not(.hidden).has-alt-auth.no-local-login {
   #login-buttons:not(.hidden) {
     width: 100%;