bootstrap margin padding utilities css code example
Example: bootstrap Margin and padding
Use the margin and padding spacing utilities to control how elements and
components are spaced and sized. Bootstrap 4 includes a five-level scale for
spacing utilities, based on a 1rem value default $spacer variable. Choose
values for all viewports (e.g., .mr-3 for margin-right: 1rem), or pick
responsive variants to target specific viewports (e.g., .mr-md-3 for
margin-right: 1rem starting at the md breakpoint).
Margin Y 0
Margin Y 1
Margin Y 2
Margin Y 3
Margin Y 4
Margin Y 5
Margin Y Auto