diff options
Diffstat (limited to 'components/layout_2020/fragment_tree/box_fragment.rs')
| -rw-r--r-- | components/layout_2020/fragment_tree/box_fragment.rs | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/components/layout_2020/fragment_tree/box_fragment.rs b/components/layout_2020/fragment_tree/box_fragment.rs index 6f697ef23fd..9c06c212d33 100644 --- a/components/layout_2020/fragment_tree/box_fragment.rs +++ b/components/layout_2020/fragment_tree/box_fragment.rs @@ -31,7 +31,13 @@ pub(crate) struct BoxFragment { pub border: Sides<Length>, pub margin: Sides<Length>, - pub clearance: Length, + /// When the `clear` property is not set to `none`, it may introduce clearance. + /// Clearance is some extra spacing that is added above the top margin, + /// so that the element doesn't overlap earlier floats in the same BFC. + /// The presence of clearance prevents the top margin from collapsing with + /// earlier margins or with the bottom margin of the parent block. + /// https://drafts.csswg.org/css2/#clearance + pub clearance: Option<Length>, pub block_margins_collapsed_with_children: CollapsedBlockMargins, @@ -51,7 +57,7 @@ impl BoxFragment { padding: Sides<Length>, border: Sides<Length>, margin: Sides<Length>, - clearance: Length, + clearance: Option<Length>, block_margins_collapsed_with_children: CollapsedBlockMargins, ) -> BoxFragment { let position = style.get_box().position; @@ -85,7 +91,7 @@ impl BoxFragment { padding: Sides<Length>, border: Sides<Length>, margin: Sides<Length>, - clearance: Length, + clearance: Option<Length>, block_margins_collapsed_with_children: CollapsedBlockMargins, overconstrained: PhysicalSize<bool>, ) -> BoxFragment { |