Margin collapsing
Source: https://developer.mozilla.org/en-US/docs/Web/CSS/margin_collapsing Top and bottom margins of blocks (y轴方向上的margi...
Source: https://developer.mozilla.org/en-US/docs/Web/CSS/margin_collapsing Top and bottom margins of blocks (y轴方向上的margi...
让标题出现在内容区的边框上 代码如下: 示例标题 床前明月光, 疑是地上霜。 举头望明月, 低头思故乡。 效果如下: 示例标题 床前明月光, 疑是地上霜。 举头望明月, 低头思故乡。 将有宽度的元素在其容器中水平居中(元素若有高度,可同时垂...
Source: http://www.freeformatter.com/html-entities.html Complete list of HTML entities with their numbers and names. Als...