Bootstrap

Four dogs

Four dogs, side-by-side or stacked, depending on the screen size.

Make a page with a header, footer, and two sidebars.

Make a page about how much doggos like Bootstrap.

Make cool looking forms with Bootstrap.

Make cool navbars for menus.

Accessibility is about making websites that people with disabilities can use.

The basic principles of BS's responsive grid system.

What if the standard BS styles don't fit what you want? Change them!