Older Articles & Full Lenght Menu Titles

Hello,
I have 2 issues that i couldnt manage to fix.

Issue #1 : I’ve set my homepage showing article number to 12. When I reach to bottom of my main page and click to “older posts” button, older posts not coming as 3 column tiles. Instead they come as 1 column till the bottom of the page. How could i fix it so when i click to “older posts” article tiles come as default 3 column style?

Issue #2 : On my main menu, some of the menu titles is long and becuse of the widht of drop down menu is short they create 2 line. I want to expand width of the menu so all of titles will fit to 1 line.

Thank you.
Best regards

The page I need help with: [log in to see the link]