CSS 为 div 添加底部边框

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时间:2020-08-29 21:23:52  来源:igfitidea点击:

Add a bottom border to a div

css

提问by ScG

I am trying to add a bottom border to a div

我正在尝试向 div 添加底部边框

.divLast
{
   top: 0px;
   margin:0px;  
   padding: 0px 2px 2px 3px;    
   border-width: 2px;
   border-bottom-width:2px;
   border-bottom-color:White;
   width: 100%;
}

However the bottom border does not appear white. Any idea?

但是,底部边框不会显示为白色。任何的想法?

回答by rahul

You have to specify the border-bottom-stylealso to the div

您还必须为 div指定border-bottom-style

and your code becomes

你的代码变成

.divLast 
{
   top: 0px;
   margin:0px;  
   padding: 0px 2px 2px 3px;    
   border-width: 2px;
   border-bottom-width:2px;
   border-bottom-color:White;
   border-bottom-style: solid;
   width: 100%;
}

or you can use a shorthand for the border-bottomlike below

或者您可以使用如下所示的边框底部的速记

<style>
.divLast 
{
   top: 0px;
   margin:0px;  
   padding: 0px 2px 2px 3px;    
   border-width: 2px;
   border-bottom: 2px white solid;
   width: 100%;
}
</style>
<div class='divLast'>
   test element with white border bottom
</div>

This works fine for me

这对我来说很好用

回答by Jamie Dixon

It's because you need to state what the border style is. Without this the border wont show:

这是因为您需要说明边框样式是什么。没有这个边界不会显示:

border-bottom-style:solid;

You could also combine your declerations into one like so:

您还可以将您的声明合并为一个,如下所示:

border-bottom:2px solid White;