setMargin(int)setContentsMargins(int left, int top, int right, int bottom);setContentsMargins(const QMargins &margins) setMargin可以设置左、上、右、下的外边距,设置之后,他们的外边距是相同的。 se...
margin and padding are the two most commonly used properties for spacing-out elements. A margin is the space outside something, whereas padding is the space inside something.
比如我们该页的h2...
看下面 的代码:<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head...