css学习笔记二之inline-block_html/css_WEB-ITnose
1、inline-block是CSS2.1中新增的盒类型,在div中将display属性设定为"inline-block",则div显示效果与设置display属性为"inline"是一样的效果。
inline-block具有inline属性的列属性,内部又具有block属性的块属性,可以使用width,height,margin,padding,border等元素。
2、使用inline-block可以在某些情况下替代float浮动元素,PS:要做一个横向导航条
在inline-block出现之前,一般都是使用以下代码,来完成上述功能:
<div class="nav"> <ul> <li><a href="">AngularJS</a></li> <li><a href="">AngularJS</a></li> <li><a href="">AngularJS</a></li> <li><a href="">AngularJS</a></li> <li><a href="">AngularJS</a></li> <li><a href="">AngularJS</a></li> </ul></div>li { float: left; list-style: none; width: 100px; padding: 10px 0;}
而使用inline-block,则可以通过如下代码完成:
li { display: inline-block; width: 100px; padding: 10px 0; text-align: center;}
关于两者的区别,在于float脱离文档流,若是需要文字环绕,则应该选择float元素,若需要让nav居中,或垂直对齐,则需要用inline-block。
而在使用inline-block时,若是给上述li元素加上边框,则会发现左右有空白出现,这时有何解决方法呢?现在让我们来看看解决方法:
- 删除html中的空白:不要让元素之间换行,这可能比较蛋疼,但也是一种方法,特别是你元素不多的时候。
- 使用负边距:你可以用负边距来补齐空白。但你需要调整font-size,因为空白的宽度与这个属性有关系。我认为是0.25em,但我不确定。如果有人知道可以留言告诉我。
- 给父元素设置font-size:0:不管空白多大,由于空白跟font-size的关系,设置这个属性即可把空白的宽度设置为0.在实际使用的时候,你还需要给子元素重新设置font-size。

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