我正試圖將一個(gè)& ltul & gt在a & ltdiv & gt。我嘗試了以下方法
text-align: center;
和
left: 50%;
這不管用。
CSS:
.container {
clear: both;
width: 800px;
height: 70px;
margin-bottom: 10px;
text-align: center;
}
.container ul {
padding: 0 0 0 20px;
margin: 0;
list-style: none;
}
.container ul li {
margin: 0;
padding: 0;
}
我希望ul在容器內(nèi)居中。
下面是CSS中水平居中的解決方案列表。該代碼片段包含了所有這些內(nèi)容。
html {
font: 1.25em/1.5 Georgia, Times, serif;
}
pre {
color: #fff;
background-color: #333;
padding: 10px;
}
blockquote {
max-width: 400px;
background-color: #e0f0d1;
}
blockquote > p {
font-style: italic;
}
blockquote > p:first-of-type::before {
content: open-quote;
}
blockquote > p:last-of-type::after {
content: close-quote;
}
blockquote > footer::before {
content: "\2014";
}
.container,
blockquote {
position: relative;
padding: 20px;
}
.container {
background-color: tomato;
}
.container::after,
blockquote::after {
position: absolute;
right: 0;
bottom: 0;
padding: 2px 10px;
border: 1px dotted #000;
background-color: #fff;
}
.container::after {
content: ".container-" attr(data-num);
z-index: 1;
}
blockquote::after {
content: ".quote-" attr(data-num);
z-index: 2;
}
.container-4 {
margin-bottom: 200px;
}
/**
* Solution 1
*/
.quote-1 {
max-width: 400px;
margin-right: auto;
margin-left: auto;
}
/**
* Solution 2
*/
.container-2 {
text-align: center;
}
.quote-2 {
display: inline-block;
text-align: left;
}
/**
* Solution 3
*/
.quote-3 {
display: table;
margin-right: auto;
margin-left: auto;
}
/**
* Solution 4
*/
.container-4 {
position: relative;
}
.quote-4 {
position: absolute;
left: 50%;
transform: translateX(-50%);
}
/**
* Solution 5
*/
.container-5 {
display: flex;
justify-content: center;
}
<main>
<h1>CSS: Horizontal Centering</h1>
<h2>Uncentered Example</h2>
<p>This is the scenario: We have a container with an element inside of it that we want to center. I just added a little padding and background colors so both elements are distinquishable.</p>
<div class="container container-0" data-num="0">
<blockquote class="quote-0" data-num="0">
<p>My friend Data. You see things with the wonder of a child. And that makes you more human than any of us.</p>
<footer>Tasha Yar about Data</footer>
</blockquote>
</div>
<h2>Solution 1: Using <code>max-width</code> & <code>margin</code> (IE7)</h2>
<p>This method is widely used. The upside here is that only the element which one wants to center needs rules.</p>
<pre><code>.quote-1 {
max-width: 400px;
margin-right: auto;
margin-left: auto;
}</code></pre>
<div class="container container-1" data-num="1">
<blockquote class="quote quote-1" data-num="1">
<p>My friend Data. You see things with the wonder of a child. And that makes you more human than any of us.</p>
<footer>Tasha Yar about Data</footer>
</blockquote>
</div>
<h2>Solution 2: Using <code>display: inline-block</code> and <code>text-align</code> (IE8)</h2>
<p>This method utilizes that <code>inline-block</code> elements are treated as text and as such they are affected by the <code>text-align</code> property. This does not rely on a fixed width which is an upside. This is helpful for when you don’t know the number of elements in a container for example.</p>
<pre><code>.container-2 {
text-align: center;
}
.quote-2 {
display: inline-block;
text-align: left;
}</code></pre>
<div class="container container-2" data-num="2">
<blockquote class="quote quote-2" data-num="2">
<p>My friend Data. You see things with the wonder of a child. And that makes you more human than any of us.</p>
<footer>Tasha Yar about Data</footer>
</blockquote>
</div>
<h2>Solution 3: Using <code>display: table</code> and <code>margin</code> (IE8)</h2>
<p>Very similar to the second solution but only requires to apply rules on the element that is to be centered.</p>
<pre><code>.quote-3 {
display: table;
margin-right: auto;
margin-left: auto;
}</code></pre>
<div class="container container-3" data-num="3">
<blockquote class="quote quote-3" data-num="3">
<p>My friend Data. You see things with the wonder of a child. And that makes you more human than any of us.</p>
<footer>Tasha Yar about Data</footer>
</blockquote>
</div>
<h2>Solution 4: Using <code>translate()</code> and <code>position</code> (IE9)</h2>
<p>Don’t use as a general approach for horizontal centering elements. The downside here is that the centered element will be removed from the document flow. Notice the container shrinking to zero height with only the padding keeping it visible. This is what <i>removing an element from the document flow</i> means.</p>
<p>There are however applications for this technique. For example, it works for <b>vertically</b> centering by using <code>top</code> or <code>bottom</code> together with <code>translateY()</code>.</p>
<pre><code>.container-4 {
position: relative;
}
.quote-4 {
position: absolute;
left: 50%;
transform: translateX(-50%);
}</code></pre>
<div class="container container-4" data-num="4">
<blockquote class="quote quote-4" data-num="4">
<p>My friend Data. You see things with the wonder of a child. And that makes you more human than any of us.</p>
<footer>Tasha Yar about Data</footer>
</blockquote>
</div>
<h2>Solution 5: Using Flexible Box Layout Module (IE10+ with vendor prefix)</h2>
<p></p>
<pre><code>.container-5 {
display: flex;
justify-content: center;
}</code></pre>
<div class="container container-5" data-num="5">
<blockquote class="quote quote-5" data-num="5">
<p>My friend Data. You see things with the wonder of a child. And that makes you more human than any of us.</p>
<footer>Tasha Yar about Data</footer>
</blockquote>
</div>
</main>
制作你的UL汽車的左右邊距,并給它指定一個(gè)寬度:
#headermenu ul {
margin: 0 auto;
width: 620px;
}
編輯:正如kleinfreund所建議的,您也可以將容器居中對齊,并給ul一個(gè)內(nèi)聯(lián)塊顯示,但是您還必須給LIs一個(gè)左浮動或內(nèi)聯(lián)顯示。
#headermenu {
text-align: center;
}
#headermenu ul {
display: inline-block;
}
#headermenu ul li {
float: left; /* or display: inline; */
}
你可以檢查這解決了你的問題...
#headermenu ul{
text-align: center;
}
#headermenu li {
list-style-type: none;
display: inline-block;
}
#headermenu ul li a{
float: left;
}
http://jsfiddle.net/thirtydot/VCZgW/
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