Bootstrap 4, How do I center-align a button?

问题:

<div class="container">
  <div class="row">
    <div class="col-xs-12 col-sm-12 col-md-8">
      <div v-for="job in job">
        <div class="text-center">
          <h1>{{ job.job_title }}</h1>
          <p><strong>Google Inc. </strong> - {{ job.location }}</p>
          <h2><u>Job Description</u></h2>
        </div>
        <p v-html="desc"></p>
        <p class="text-center">Posted: {{ formatDate(job.date_created) }}</p>
        <button v-on:click="applyResume()" id="apply-btn" class="btn btn-primary">{{ buttonText }}</button>
      </div>
    </div>
    <div class="hidden-sm-down col-md-4"></div>
  </div>
</div>

Can't figure out how to center this button. In BS 3 I would just use center-block but that's not an option in BS4. Any advice?

回答1:

In Bootstrap 4 you should use the text-center class to align inline-blocks.

NOTE: text-align:center; defined in a custom class you apply to your parent element will work regardless of the Bootstrap version you are using. And that's exactly what .text-center applies.

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css">

<div class="container">
  <div class="row">
    <div class="col text-center">
      <button class="btn btn-default">Centered button</button>
    </div>
  </div>
</div>

回答2:

Here is the full HTML that I use to center by button in Bootsrap form after closing form-group:

<div class="form-row text-center">
    <div class="col-12">
        <button type="submit" class="btn btn-primary">Submit</button>
    </div>
 </div>

回答3:

Try this with bootstrap

CODE:

<div class="row justify-content-center">
  <button type="submit" class="btn btn-primary">btnText</button>
</div>

LINK:

https://getbootstrap.com/docs/4.1/layout/grid/#variable-width-content

回答4:

Use text-center class in the parent container for Bootstrap 4

回答5:

With the use of the bootstrap 4 utilities you could horizontally center an element itself by setting the horizontal margins to 'auto'.

To set the horizontal margins to auto you can use mx-auto . The m refers to margin and the x will refer to the x-axis (left+right) and auto will refer to the setting. So this will set the left margin and the right margin to the 'auto' setting. Browsers will calculate the margin equally and center the element. The setting will only work on block elements so the display:block needs to be added and with the bootstrap utilities this is done by d-block.

<button type="submit" class="btn btn-primary mx-auto d-block">Submit</button>

You can consider all browsers to fully support auto margin settings according to this answer Browser support for margin: auto so it's safe to use.

The bootstrap 4 class text-center is also a very good solution, however it needs a parent wrapper element. The benefit of using auto margin is that it can be done directly on the button element itself.

回答6:

for a button in a collapsed navbar nothing above worked for me so in my css file i did.....

.navbar button {
    margin:auto;
}

and it worked!!

回答7:

What worked for me was (adapt "css/style.css" to your css path):

Head HTML:

 <link rel="stylesheet" type="text/css" href="css/style.css" media="screen" />

Body HTML:

 <div class="container">
  <div class="row">
    <div class="mycentered-text">
      <button class="btn btn-default"> Login </button>
    </div>
  </div>
</div>

Css:

.mycentered-text {
    text-align:center
}

回答8:

you can also just wrap with an H class or P class with a text-center attribute