Detailed explanation of how to achieve alignment on both ends of CSS

Previous words

 Alignment at both ends is very commonly used in the production of navigation Nav. This article will introduce in detail the 3 implementation methods of CSS alignment at both ends

flex

PHONEFlexible box model As a powerful elastic layout method, flex can hold most layouts Effects, of course, include alignment. If you want Considering the compatibility of the three versions of flex, use the following code <a href="http://www.php.cn/wiki/109.html" target="_blank"> [Note] IE9-browser does not support </a><pre class='brush:php;toolbar:false;'>justify-content: space-between;</pre>text-align Horizontal Alignment

text-align

itself has an attribute value of aligning both ends

justify

. However, it should be noted that when using it to achieve alignment at both ends, you need to pay attention to adding whitespace characters (including spaces, newlines, and tabs) between elements for it to work. Since there are line breaks between

elements in the HTML structure, there is no need to add additional whitespace characters  But just in this way, the elements cannot achieve the effect of aligning both ends

 Elements must occupy a full line, as shown below. Elements that fill up a row can be aligned at both ends, but elements that do not fill up cannot be aligned 【text-align-last】  Obviously, none of the above situations meet the requirements. At this time, You need to use the attribute text-align-last, which is used to specify how to align the last line of text.

So replace the

text-align

attribute with

text -align-last

. However, to be compatible with

IE browser

, you need to set text-align:justify

at the same time [Note] Safari browser, IOS, androis4.4-browser does not support <pre class='brush:php;toolbar:false;'>.justify-content_flex-justify{ -webkit-box-pack: justify; -ms-flex-pack: justify; -webkit-justify-content: space-between; justify-content: space-between; } &lt;style&gt; body{margin: 0;} ul{margin: 0;padding: 0;list-style: none;} .list{width: 200px;overflow: hidden;border: 1px solid gray;background-color: lightgreen;line-height: 30px;} .in{background-color: lightblue;padding: 0 10px;} .display_flex{display: -webkit-box;display: -ms-flexbox;display: -webkit-flex;display: flex;} .display_flex &gt; *{display: block;} .justify-content_flex-justify{-webkit-box-pack: justify;-ms-flex-pack: justify;-webkit-justify-content: space-between;justify-content: space-between;} &lt;/style&gt; &lt;ul class=&quot;list display_flex justify-content_flex-justify&quot;&gt; &lt;li class=&quot;in&quot;&gt;内容&lt;/li&gt; &lt;li class=&quot;in&quot;&gt;样式&lt;/li&gt; &lt;li class=&quot;in&quot;&gt;行为&lt;/li&gt; &lt;/ul&gt;</pre>【after pseudo-element】 Using text-align-last can achieve the effect of aligning both ends, but the compatibility is not good. By setting the pseudo element :after

to the parent element, and setting

inline-block

to the pseudo element, and setting the width to 100%, it is equivalent to the pseudo element

:after

is squeezed to the second line. As a result, the original element occupies the first line, triggering the effect of aligning both ends  It should be noted here that because the blank space will be parsed as a newline, you can set the height of the parent element height<a href="http://www.php.cn/wiki/978.html" target="_blank">, and overflow and hide to solve the problem of redundant line breaks</a><pre class='brush:php;toolbar:false;'>&lt;style&gt; body{margin: 0;} ul{margin: 0;padding: 0;list-style: none;} .list{width: 200px;overflow: hidden;border: 1px solid gray;background-color: lightgreen;line-height: 30px;text-align: justify;text-align-last: justify;} .in{background-color: lightblue;padding: 0 10px;display:inline-block;} &lt;/style&gt; &lt;ul class=&quot;list &quot;&gt; &lt;li class=&quot;in&quot;&gt;内容&lt;/li&gt; &lt;li class=&quot;in&quot;&gt;样式&lt;/li&gt; &lt;li class=&quot;in&quot;&gt;行为&lt;/li&gt; &lt;/ul&gt;</pre>column Use multi-column layoutcolumn to achieve similar effects.

column-count

defines the number of columns of the element. In the example, there are 3 sub-elements, so it is defined as 3 columns. Special attention should be paid to the fact that the child elements need to be set as block elements at this time for it to take effect.  [Note] IE9-browser does not support

<style>
body{margin: 0;}    
ul{margin: 0;padding: 0;list-style: none;}
.list{width: 200px;height: 30px;overflow: hidden;border: 1px solid gray;background-color: lightgreen;line-height: 30px;text-align: justify;}
.in{background-color: lightblue;padding: 0 10px;display:inline-block;}
.list:after{content:"";width:100%;display:inline-block;}
</style>
<ul class="list ">
    <li class="in">内容</li>
    <li class="in">样式</li>
    <li class="in">行为</li>  
</ul>

 If vertical bars need to be used between child elements , and when the height of the vertical line is the same as the height of the child element, use

column-rule

to conveniently implement the requirement<pre class='brush:php;toolbar:false;'>&lt;style&gt; body{margin: 0;} ul{margin: 0;padding: 0;list-style: none;} .list{width: 200px;overflow: hidden;border: 1px solid gray;background-color: lightgreen;line-height: 30px;text-align: center;} .col3{-webkit-column-count:3;-moz-column-count:3;column-count:3;} .in{background-color: lightblue;padding: 0 10px;display:block;} &lt;/style&gt; &lt;ul class=&quot;list col3&quot;&gt; &lt;li class=&quot;in&quot;&gt;内容&lt;/li&gt; &lt;li class=&quot;in&quot;&gt;样式&lt;/li&gt; &lt;li class=&quot;in&quot;&gt;行为&lt;/li&gt; &lt;/ul&gt;</pre>

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