Question

大家好，

嗨，我正在尝试在Bootstrap 4中实现以下目标。我有一个细长的横幅图像，需要在上面垂直对齐三个按钮。他们也应该有所反应。请参见下图。此图片中的徽标是细长横幅本身的一部分。两端的填充为106像素。我很困惑，如何实现呢？它在移动设备上的显示方式不同，按钮将堆叠在另一个按钮的上方。

我已经从主文件中删除了代码

<!doctype html>

<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

<title>Hello, world!</title>

.btn-midweek-必须{

width: 184px;
height: 48px;
color: #41173F;
font-family: "Proxima Nova";
font-size: 14px;
font-weight: 600;
line-height: 20px;
text-align: center;
text-decoration: none !important;
background-color: #FFFFFF;
margin: 0 15px;

}

.buttonList { 位置：绝对；顶部：0px；右：0px；填充：51px 30px; }

/* Media Query for 768px */

@media（最大宽度：768像素）{ .buttonList { 位置：绝对；顶部：0px；右：0px；填充：24px 30px; } .btn-midweek-Must { 宽度：120像素；高度：40px；颜色：＃41173F; 字体家族：“ Proxima Nova”； font-size：14px; 字体粗细：600；行高：20px；文本对齐：居中；文字修饰：无！重要；背景颜色：#FFFFFF; 边距：0 10px; }

}

</style>

<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<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>
  <div class="container">
      <div class="row mt-5">
      <div class="col col-12">




        <picture>
            <source media="(max-width:767px)" srcset="/Users/bzest/Beenish 2020/Web Development Bootstrap/midweek musts/slim-midweek-m@2x.png"/>
          <img src="/Users/bzest/Beenish 2020/Web Development Bootstrap/midweek musts/slim-midweek.png" srcset="/Users/bzest/Beenish 2020/Web Development Bootstrap/midweek musts/slim-midweek@2x 2x" />
         </picture>

          <div class="buttonList ">
      <button class="btn-primary btn-midweek-Must cta body-font">
          <a href="$url('Search-Show','cgid','mid-week-250')$" >
          Under $250 › </a></button>
      <button class="btn-primary btn-midweek-Must cta body-font">

          <a href="$url('Search-Show','cgid','mid-week-500')$" >Under $500 ›</a></button>
      <button class="btn-primary btn-midweek-Must cta body-font">

          <a href="$url('Search-Show','cgid','mid-week-1000')$" >Under $1000 ›</a></button>
     </div>

        </div>
      </div>
  </div>

Answer 1

Flex

使用全套响应式flexbox实用工具快速管理网格列，导航，组件等的布局，对齐和大小调整： Bootstrap Flex

如果内容的高度固定，则用户flex可以显示并按以下方式进行操作：

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet"/>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div class="d-flex align-items-center justify-content-around p-2 bg-light" style="height: 100px">
        <div>
            <span class="border p-2">
                logo
            </span>
    </div>
        <div>
            <button class="btn btn-success">btn 1</button>
            <button class="btn btn-success">btn 2</button>
            <button class="btn btn-success">btn 3</button>
        </div>
    </div>
</body>
</html>

方法：

d-flex会将弹性显示添加到您的父div。

通过添加align-items-center，您的孩子div将在第二条轴（此处为垂直轴）上居中。仅当您的父div的高度很明显时，它才起作用。

Answer 2

Bootsrap 4导航栏带有居中按钮。

<nav class="navbar navbar-expand-lg navbar-light bg-light">
    <a class="navbar-brand" href="#">Navbar</a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>

    <div class="collapse navbar-collapse" id="navbarSupportedContent">

      <div class="form-inline my-2 my-lg-0 mx-auto">
        <button class="btn btn-outline-success my-2 my-sm-0 ml-3" type="submit">Button 1 </button>
        <button class="btn btn-outline-success my-2 my-sm-0 ml-3" type="submit">Button 2</button>
        <button class="btn btn-outline-success my-2 my-sm-0 ml-3" type="submit">Button 3</button>
      </div>
    </div>
  </nav>

将Div垂直居中放置在另一个div bootstrap-4

2 个答案: