Bootstrap4.2 collapse component JS source code
The JS code that relates to selectors of data-toggle is as below: Here data-toggle=”collapse” can be used with href or data-target. One the element with element.id, an initial class=”collapse” should…
Bootstrap4.2 Card component source code
Noticeably, Card component uses flex and CSS grid.
Bootstrap4 badge source code
vertical-align: baseline; Check vertical-align in depth. @at-root a#{&} @at-root means the selector definition is valid outside of .badge at the root of CSS. a#{&} = a .badge. &:empty means .badge:empty…
Bootstrap4 Flex layout source code
See how flex relected layout directives are defined in Bootstrap4.
Bootstrap 4.2 SCSS spacing source code
I had a look at Bootstrap 4.2 SCSS source code and I can tell that it has been written quite clean and clear. Let’s quote spacing part( Margin and padding)…