因為 ionic v4 元件在 ionic 官方團隊製作當下時，沒有提供 parts 屬性作為選擇元件底下特定 slot 或元素的依據，所以在 shadow root 時，很難做到官方教學文件和方法以外的客製化樣
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Howard Lee is a Staff Software Engineer based in Taipei, specializing in frontend architecture, CI/CD, and production-quality engineering for enterprise web applications. With 13+ years of software development experience, Howard has worked across B2B SaaS, IoT energy-management platforms, online travel marketplaces, and Android applications. His work focuses on modernizing large frontend systems, improving delivery quality, and building reliable product workflows with automated testing, observability, and practical cloud/platform integration. Core Expertise Frontend architecture: Angular 5 to 19 modernization, TypeScript, JavaScript, React, Next.
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