Fixed-19800: Contact us : design improvement.

Author: suryakant-krish

app/code/Magento/Contact/view/frontend/web/css/source/_module.less

@@ -0,0 +1,50 @@
+// /**
+//  * Copyright © Magento, Inc. All rights reserved.
+//  * See COPYING.txt for license details.
+//  */
+
+
+
+//
+//  Common
+//  _____________________________________________
+
+& when (@media-common = true) {
+    .contact-index-index {
+        .column:not(.sidebar-main){
+            .form.contact {
+                width: 50%;
+                float: none;
+            }
+        }
+        .column:not(.sidebar-additional) {
+            .form.contact {
+                width: 50%;
+                float: none;
+            }
+        }
+    }
+
+}
+
+//
+//  Mobile
+//  _____________________________________________
+
+.media-width(@extremum, @break) when (@extremum = 'max') and (@break = @screen__m) {
+    .contact-index-index {
+        .column:not(.sidebar-main){
+            .form.contact {
+                width: 100%;
+                float: none;
+            }
+        }
+        .column:not(.sidebar-additional) {
+            .form.contact {
+                width: 100%;
+                float: none;
+            }
+        }
+    }
+}
+