HTML Input Types

Different input types guide the user.

## Common input types
```html
<input type="text" placeholder="Name" />
<input type="email" placeholder="Email" />
<input type="password" placeholder="Password" />
<input type="number" placeholder="Age" />
<input type="date" />
```

## UI Preview
Browser automatically shows:
- email keyboard on mobile
- date picker
- number arrows

## Benefit
Less errors, better user experience.