small spacing changes to form styling, primarily single checkboxes so the input and checkbox will display on the same line

moving light bg header parent selector back inside header title class - got moved in a previous merge

after pseudo element on all underlined links should be position left zero so it renders in the correct position across all browsers

changing grid items with three children to have one child at a larger breakpoint otherwise grid items appear squashed

correcting focus areas layout across viewports to show four on desktop, two on tablet and one on mobile