Okay, here is a basic structure for a photo collage using divs and some CSS for layout.

Okay, here is a portrait-oriented collage layout for 10 photos using divs, with a space for grades.

Okay, here's the layout adjusted to a single column, placing the first photo at the top and the rest sequentially below it.

Okay, this code arranges the photos in a single vertical column, one below the other.

Okay, here is a horizontal layout using 5 columns and 2 rows, with refined styling.

Okay, I've increased the size of the collage and added a print button with basic print styling. Note that the browser's print dialog handles the actual saving to PDF or sending to a printer; we can't force a direct PNG export this way.

Okay, I've significantly increased the max-width of the container to make the overall collage and individual photo divs much larger. The 1fr unit in the grid columns will automatically make each photo div expand to fill the available space.

Okay, I've made the grade display smaller, increased the container size again for screen viewing, and added print styles specifically aimed at fitting the collage onto a single landscape page.

• Grade Area: Reduced padding and font size.

• Container Size: Increased max-width for screen display.

• Printing: Added @page { size: landscape; margin: 1cm; } to suggest landscape orientation and control margins. Reduced gaps/padding significantly in print styles and used page-break-inside: avoid to help prevent splitting, although browser behavior can vary.