Strikingly is great for beginners and focuses on designing mobile-friendly single-page websites. A single-page website is not as limited as you would think. You can add galleries, video backgrounds, media sliders, custom colors, and password protection. Also, build a basic web store with no transaction fees and integrate your social feeds directly on your site.
Strikingly offer both a free forever limited plan and a full-featured 14-day free trial.