边距：汽车未居中 [英] margin: auto is not centering
问题描述
网站上的以下样式： http://6.470.scripts.mit。 edu / css_exercises / exercise4.html
<style type="text/css">
#sponsors {
margin:auto;
margin-top:50px;
overflow: hidden;
width: auto;
display: inline-block;
}
div.image img {
margin: 3px;
border: 1px solid #ffffff;
}
div.image a:hover img {
border: 1px solid;
}
</style>
</head>
<body>
<h1>Sponsors of 6.470</h1>
<div id="sponsors">
<div class="image"><a href=""><img src="images/appian.png" width="150" height="85"></a></div>
<div class="image"><a href=""><img src="images/dropbox.png" width="150px" height="85px"></a></div>
<div class="image"><a href=""><img src="images/facebook.png" width="150px" height="85px"></a></div>
<div class="image"><a href=""><img src="images/nextjump.png" width="150px" height="85px"></a></div>
<div class="image"><a href=""><img src="images/palantir.png" width="150px" height="85px"></a></div>
<div class="image"><a href=""><img src="images/quora.png" width="150px" height="85px"></a></div>
<div class="image"><a href=""><img src="images/tripadvisor.png" width="150px" height="85px"></a></div>
<div class="image"><a href=""><img src="images/vecna.png" width="150px" height="85px"></a></div>
</div>
</body>
如果 width：auto 从 #sponsors ，则即使 margin：auto ，div
if the width: auto is removed from #sponsors then the div#sponsors is not center aligned even though margin: auto is used.
类似地，如果用 margin：auto <代替 text-align：center / code>以上的正文样式，则< h1> 不会居中对齐，这很荒谬；
Similarly if instead of text-align: center is replaced by margin: auto in body style above, then the <h1> will not be center aligned which is preposterous;
因为我已经使用 margin：auto 很多次了，所以它能够使内容居中而没有任何问题。因此，请帮助我，对此我将不胜感激。
because I have used margin: auto a lot of times and it was able to center the content without any issue. So hence help me and I will appreciate this a lot.
PS：除了使用 doctype 外，我还使用了firefox标记，它仍然不能与 margin：auto 居中。
PS: I used firefox and besides use the doctype tag it is still not able to center with margin: auto.
推荐答案
在 #sponsors ID上定义宽度或边距
像这样
#sponsors{
margin:0 auto; // left margin is auto, right margin is auto , top and bottom margin is 0 set
width:1000px; // define your width according to your design
}
有关 保证金自动
More about margin auto
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