CSS 处于 xs 模式时的 twitter 引导文本中心
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twitter bootstrap text-center when in xs mode
提问by Dipendra Gurung
I have html as:-
我有 html 为：-
<footer>
<div class="container">
<div class="row">
<div class="col-xs-12 col-sm-6 text-left">
<p>
© 2015 example.com. All rights reserved.
</p>
</div>
<div class="col-xs-12 col-sm-6 text-right">
<p>
<a href="#"><i class="fa fa-facebook"></i></a>
<a href="#"><i class="fa fa-twitter"></i></a>
<a href="#"><i class="fa fa-google-plus"></i></a>
</p>
</div>
</div>
</div>
</footer>
From the code you can see that the column's text are left and right aligned respectively. However in the xs mode I like them to be center aligned. How can I do this using twitter bootstrap?
从代码中可以看到列的文本分别是左对齐和右对齐。但是在 xs 模式下，我喜欢它们居中对齐。如何使用 twitter bootstrap 执行此操作？
回答by Jarrod
Responsive text alignment has been added in Bootstrap V4:
Bootstrap V4 中添加了响应式文本对齐：
https://getbootstrap.com/docs/4.0/utilities/text/#text-alignment
https://getbootstrap.com/docs/4.0/utilities/text/#text-alignment
For left, right, and center alignment, responsive classes are available that use the same viewport width breakpoints as the grid system.
对于左对齐、右对齐和居中对齐，响应类可用，它们使用与网格系统相同的视口宽度断点。
<p class="text-sm-left">Left aligned text on viewports sized SM (small) or wider.</p>
回答by loddn
There is nothing built into bootstrap for this, but some simple css could fix it. Something like this should work. Not tested though
bootstrap 中没有为此内置任何内容，但是一些简单的 css 可以修复它。像这样的事情应该有效。虽然没有测试
@media (max-width: 768px) {
.col-xs-12.text-right, .col-xs-12.text-left {
text-align: center;
}
}
回答by Prakash
html
html
<div class="text-lg-right text-center">
center in xs and right in lg devices
</div>
回答by Marco Pietro Cirillo
@media (max-width: 767px) {
footer .text-right,
footer .text-left {
text-align: center;
}
}
I updated @loddn's answer, making two changes
我更新了@loddn 的回答，做了两个改动
max-widthofxsscreens in bootstrap is 767px (768px is the start ofsmscreens)- (this one is a matter of preference) I used
footerinstead ofcol-*so that if the column widths change, the CSS doesn't need to be updated.
max-widthxsbootstrap 中的屏幕数为 767px（768px 是sm屏幕的开始）- （这是一个偏好问题）我使用了
footer而不是col-*这样，如果列宽发生变化，则不需要更新 CSS。
回答by Sanjib Debnath
Css Part is:
CSS部分是：
CSS:
CSS：
@media (max-width: 767px) {
// Align text to center.
.text-xs-center {
text-align: center;
}
}
And the HTML part will be ( this text center work only below 767px width )
HTML 部分将是（此文本中心仅在 767px 宽度以下工作）
HTML:
HTML：
<div class="col-xs-12 col-sm-6 text-right text-xs-center">
<p>
<a href="#"><i class="fa fa-facebook"></i></a>
<a href="#"><i class="fa fa-twitter"></i></a>
<a href="#"><i class="fa fa-google-plus"></i></a>
</p>
</div>
回答by Hitnux
Bootstrap 4
引导程序 4
<div class="col-md-9 col-xs-12 text-md-left text-center">md left, xs center</div>
<div class="col-md-9 col-xs-12 text-md-right text-center">md right, xs center</div>
回答by grahamlander
This was tagged as a bootstrap 3, but maybe this will be helpful: In Bootstrap 4.0.0 (non beta) : Inside the col class, use
这被标记为 bootstrap 3，但也许这会有所帮助：在 Bootstrap 4.0.0（非测试版）中：在 col 类中，使用
<div class="col text-center text-md-left">
"text-center" centers the text for all window sizes, then adding the "text-md-left" or "text-md-right" to change it above sm. You could make it "text-sm-left", "text-lg-left" or whatever. But having it set to center always first sets up it up.
“text-center”将所有窗口大小的文本居中，然后添加“text-md-left”或“text-md-right”以将其更改为高于 sm。您可以将其设为“text-sm-left”、“text-lg-left”或其他任何内容。但是将它设置为中心总是首先设置它。
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<link href="//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css" rel="stylesheet">
<body>
<footer>
<div class="container">
<div class="row">
<div class="col-xs-12 col-sm-6 text-center text-md-left">
<p>
© 2015 example.com. All rights reserved.
</p>
</div>
<div class="col-xs-12 col-sm-6 text-center text-md-right">
<p>
<a href="#"><i class="fa fa-facebook"></i></a>
<a href="#"><i class="fa fa-twitter"></i></a>
<a href="#"><i class="fa fa-google-plus"></i></a>
</p>
</div>
</div>
</div>
</footer>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
</body>
回答by TheAivis
Use bs3-upgrade library for spacings and text aligment...
使用 bs3-upgrade 库进行间距和文本对齐...
https://github.com/studija/bs3-upgrade
https://github.com/studija/bs3-upgrade
col-xs-text-center col-sm-text-left
col-xs-text-center col-sm-text-right
col-xs-text-center col-sm-text-left
col-xs-text-center col-sm-text-right
<div class="container">
<div class="row">
<div class="col-xs-12 col-sm-6 col-xs-text-center col-sm-text-left">
<p>
© 2015 example.com. All rights reserved.
</p>
</div>
<div class="col-xs-12 col-sm-6 col-xs-text-center col-sm-text-right">
<p>
<a href="#"><i class="fa fa-facebook"></i></a>
<a href="#"><i class="fa fa-twitter"></i></a>
<a href="#"><i class="fa fa-google-plus"></i></a>
</p>
</div>
</div>
</div>
