init

node_modules/ng-zorro-antd/back-top/style/responsive.less

@@ -0,0 +1,21 @@
+@media screen and (max-width: @screen-md) {
+  .@{backtop-prefix-cls} {
+    right: 60px;
+
+    &-rtl {
+      right: auto;
+      left: 60px;
+    }
+  }
+}
+
+@media screen and (max-width: @screen-xs) {
+  .@{backtop-prefix-cls} {
+    right: 20px;
+
+    &-rtl {
+      right: auto;
+      left: 20px;
+    }
+  }
+}