当屏幕变小时如何将 div 堆叠在一起？ bootstrap

Question

我有三个 div 并排放置，我希望它们在屏幕变小时堆叠在一起。相反，divs 调整大小使内容看起来很糟糕。

我按照 w3schools 教程 (bootstrap_grid_stacked_to_horizontal) 通过将它们放入 container div 和 row div 中来使它们堆叠添加 class col-lg-4 但它们仍会调整大小。

这是相关的 HTML 和 CSS:

.how-it-works-container{
     padding: 50px;
     background-color: #C5B358;
     font-family: 'Montserrat', sans-serif;
     opacity: .8;
     text-align: center;
    
     width: 100%
    }
 
    .how-it-works-box{
     padding: 30px;
     background-color: #D6C362;
     margin: 20px 5px;
     
     width: calc(30%);
     overflow-wrap: break-word;
     color: white;
     display: inline-block;
     box-shadow: 0 4px 8px 0 rgba(255, 255, 255, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
    }

<!-- How It Works section -->
<div class="how-it-works-container container">

    <h2>How It Works</h2>

  <div class="row">

      <div class="how-it-works-box col-lg-4"> 
        <img src=" {% static "images/meetlocals3.svg" %} "> 
        <h3>Meet Local People</h3>
        <p>Meet like-minded locals who could show you around their city.</p>
      </div>

      <div class="how-it-works-box col-lg-4">
        <img src=" {% static "images/showpeople.svg" %} ">
        <h3>Show Visitors Around</h3>
        <p>Show visitors around and meet interesting international visitors.</p>
      </div>

      <div class="how-it-works-box col-lg-4">
        <img src=" {% static "images/makefriends.svg" %} ">
        <h3>Make New Friends!</h3>
        <p>Walking around is a fun bonding activity to make new friends!</p>
      </div>

    </div>
</div>

Answer 1

CSS 覆盖了 Bootstrap 网格。将方框放入 Bootstrap 网格列中，这将在 xs 屏幕上自动堆叠..

http://www.codeply.com/go/gTkC50Paql

.how-it-works-container{
    padding: 50px;
    background-color: #C5B358;
    font-family: 'Montserrat', sans-serif;
    opacity: .8;
    text-align: center;
}

.how-it-works-box{
    width: 100%;
    padding: 30px;
    background-color: #D6C362;
    margin: 20px 5px;
    overflow-wrap: break-word;
    color: white;
    display: inline-block;
    box-shadow: 0 4px 8px 0 rgba(255, 255, 255, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}

<div class="how-it-works-container container-fluid">
    <h2>How It Works</h2>
    <div class="row">
        <div class="col-lg-4">
            <div class="how-it-works-box">
                <img src="">
                <h3>Meet Local People</h3>
                <p>Meet like-minded locals who could show you around their city.</p>
            </div>
        </div>
        <div class="col-lg-4">
            <div class="how-it-works-box">
                <img src="">
                <h3>Show Visitors Around</h3>
                <p>Show visitors around and meet interesting international visitors.</p>
            </div>
        </div>
        <div class="col-lg-4">
            <div class="how-it-works-box">
                <img src="">
                <h3>Make New Friends!</h3>
                <p>Walking around is a fun bonding activity to make new friends!</p>
            </div>
        </div>
    </div>
</div>

Answer 2

如您所知，bootstrap 有 12 列，因此您需要添加 col-xs-12 和 col-lg-4，然后对于超小屏幕，每个 div 将占用所有 12 列.

<div class="col-lg-4 col-xs-12">
    <div class="how-it-works-box">
        <img src="">
        <h3>Meet Local People</h3>
        <p>Meet like-minded locals who could show you around their city.</p>
    </div>
</div>
<div class="col-lg-4 col-xs-12">
    <div class="how-it-works-box">
        <img src="">
        <h3>Show Visitors Around</h3>
        <p>Show visitors around and meet interesting international visitors.</p>
    </div>
</div>
<div class="col-lg-4 col-xs-12">
    <div class="how-it-works-box">
        <img src="">
        <h3>Make New Friends!</h3>
        <p>Walking around is a fun bonding activity to make new friends!</p>
    </div>
</div>

最好为所有尺寸添加标签。 col-md- 以及 col-sm- .

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