Styles

Borders

Borders

border
border-top
border-right
border-bottom
border-left

Responsive Borders

For responsive borders use

border-(screen)
and
border-(side)-(screen)
classes.

The (side) values are

top
right
bottom
left

The (screen) values are

screen-xs
screen-sm
screen-md
screen-ml
screen-lg

Examples:

border-screen-xs
border-top-screen-sm
border-right-screen-md
border-bottom-screen-ml
border-left-screen-lg