diff --git a/browser/css/jsdialogs.css b/browser/css/jsdialogs.css
index ffd06f986..547df81ab 100644
--- a/browser/css/jsdialogs.css
+++ b/browser/css/jsdialogs.css
@@ -1906,3 +1906,13 @@ kbd,
 .jsdialog-container [id^='info-modal-label'] {
 	display: flex;
 }
+
+/* Custom props */
+#customprops .jsdialog .ui-grid .menubutton {
+	line-height: 16px;
+}
+
+#customprops div.jsdialog.ui-grid-cell, #customprops .spinfieldcontainer {
+	margin-top: auto;
+	margin-bottom: auto;
+}
\ No newline at end of file