Validates button positioning and responsive behavior across all viewports:
Desktop (>900px):
- Left side buttons (download, print, shortcuts, info) vertically stacked
- Back-to-top button on right side (intentional design)
- Zoom button visible
- Different bottom values verify vertical stacking
Wide Mobile (483-900px):
- Horizontal layout at bottom center
- Back-to-top remains on right side
- Zoom button hidden
Narrow Mobile (<483px):
- Back-to-top moved UP (5.5rem) to avoid overlap
- Still positioned on right side
- Horizontal button layout maintained
Accessibility:
- All buttons present and clickable
- Proper visibility checks
This test caught and validates the recent fixes:
1. Back-to-top on RIGHT (not left) in all mobile viewports
2. Narrow mobile positioning to prevent button overlap
3. Consistent hover effects across all buttons
Test results: 4/4 passed
- Desktop layout verification
- Wide mobile responsive layout
- Narrow mobile overlap prevention
- Button accessibility validation
juanatsap