diff --git a/core/css/server.css b/core/css/server.css
index bc66d62cc338de48199104741ab44a79f948fe07..411de7b0ecd9c6284fadfc8c72974a82e8065d2c 100644
--- a/core/css/server.css
+++ b/core/css/server.css
@@ -423,6 +423,14 @@ input.primary,
 #body-public.onlyoffice-inline #content.app-files_sharing{
     padding-bottom: unset;
 }
+#body-user #content.app-onlyoffice #app > iframe{
+    height: calc(100dvh - 106px);
+    margin-top: 0px;
+}
+#body-public #content.app-public #app > iframe {
+    height: calc(100dvh - 106px);
+}
+
 #header #notifications .notifications-button__icon {
     display: none;
 }