is-land using 
Alpine.js
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on:visible
Client-rendered Alpine.js
Hello from HTML! (No <is-land>)
Hello from HTML! (Viewport < 600px)
Hello from Alpine.js!
Client-rendered Alpine.js using <template> (with fallback)
Hello from HTML! (Viewport < 600px, <template>)
Hello from HTML! (Viewport < 600px, <template>)
Client-rendered Alpine.js using <template> (no fallback)
Hello from Alpine.js!