Html 水平对齐按钮
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Horizontally aligning button
提问by James Dawson
I'm trying to horizontally align a button using CSS. Here's my markup:
我正在尝试使用 CSS 水平对齐按钮。这是我的标记：
<button type="button" class="primary-button download-button">Download</button>
And my relevant CSS:
和我相关的 CSS：
.primary-button {
font-family: Arial, sans-serif;
font-size: 1.3em;
color: #fff;
border: 1px solid #004487;
background-image: -webkit-gradient(linear, top, bottom, from(#5288bd), to(#2f659a));
background-image: -webkit-linear-gradient(top, #5288bd, #2f659a);
box-shadow: inset 0px 1px 0px rgba(255, 255, 255, 0.4), inset 0px 0px 0px 1px rgba(255, 255, 255, 0.2), 0px 1px 0px rgba(255, 255, 255, .7);
text-shadow: 0px -1px 0px black;
cursor: pointer;
}
.download-button {
padding: 10px 20px;
border-radius: 5px;
display: block;
margin: 10px auto 0px auto;
}
However, it's still aligned to the left. I thought setting margin: 10px auto 0px auto;would horizontally align it seen as it's now a block element but apparently not.
但是，它仍然与左侧对齐。我认为设置margin: 10px auto 0px auto;会水平对齐它，因为它现在是一个块元素，但显然不是。
I've also tried wrapping it in a div and using text-align: centerbut that doesn't work either.
我也试过将它包装在一个 div 中并使用，text-align: center但这也不起作用。
采纳答案by j08691
Give the button a width. See this jsFiddle example.
给按钮一个宽度。请参阅此jsFiddle 示例。
.download-button {
? ? padding: 10px 20px;
? ? border-radius: 5px;
? ? display: block;
? ? width: 130px;
? ? margin: 10px auto 0px auto;
}?
Without a width, you're trying to center a block level element that is the full width of it's container. By explicitly setting a width (for example 130px on your button) the margin centering rule works.
没有宽度，您试图将块级元素居中，该元素是其容器的全宽。通过明确设置宽度（例如按钮上的 130 像素），边距居中规则有效。
回答by TrySpace
Actually setting floatto noneif both have position: relativeshould work:
实际上设置float为noneif 两者都position: relative应该工作：
.container{
text-align: center;
}
.button{
float: none;
}
