refactor font loading

src/node_remote_page.cpp

@@ -42,7 +42,7 @@ std::future<bool> NodeRemotePage::load_url(const std::string& url,
     align->SetAlign(YGAlignCenter);
     align->SetJustify(YGJustifyCenter);
     auto text = align->add_child_ref<NodeText>();
-    text->set_font("arial-30");
+    text->set_font_size(30);
     text->set_text("Connecting to the server...");
 
     m_url = url;