// Add overflow from borders.
int rightBorderOverflow = width() + (collapsing ? outerBorderRight() - borderRight() : 0);
int leftBorderOverflow = collapsing ? borderLeft() - outerBorderLeft() : 0;
// Add overflow from borders.
int rightBorderOverflow = width() + (collapsing ? outerBorderRight() - borderRight() : 0);
int leftBorderOverflow = collapsing ? borderLeft() - outerBorderLeft() : 0;