如何使用Bootstrap按屏幕尺寸缩放框

分类：编程问答

如何解决如何使用Bootstrap按屏幕尺寸缩放框

我正在尝试创建一个投资组合网站，希望在轮播上有一个部分，以2x2网格显示我已完成的项目。我会将每个项目放入卡中，并且当屏幕尺寸太小时，网格将变成1x4，将每个项目卡显示在自己的行上。

我花了很多时间浏览Bootstrap文档以及一些youtube教程。虽然我可以在台式机屏幕尺寸上寻找卡片大小，但将其拆散并转移到移动设备时看起来糟透了。我尝试使用可以与“ col”类相关联的各种属性，但是在我目前的情况下，它们似乎没有任何帮助。我遇到了一些障碍，不知道还有哪些其他资源可以帮助我解决此问题。

index.html 

<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,shrink-to-fit=no">

    <!-- Bootstrap & other CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous">
    <link rel="stylesheet" href="./index.css">
   
    <title>Attempted Portfolio</title>
  </head>
  <body>
    <div class="intro-container">
      <div class="container">
        <h1>
          My Name The
          <span class="txt-type" data-wait="3000" data-words ='["Developer","Designer","Creator"]'></span>
        </h1>
        <h2>Welcome to my website</h2>
      </div>
    </div>

<!-- Carousel -->
<div id="myCarousel" class="carousel slide" 
data-ride="carousel">

  <ol class="carousel-indicators">
    <li data-target="#myCarousel"
    data-slide-to="0" class="active"></li>
    <li data-target="#myCarousel"
    data-slide-to="1"></li>
  </ol>      

  <div class="carousel-inner">
      <div class="carousel-item active">
        <div class="container">
          <h1>About Me</h1>
          <p>4 Buzzwords,Maybe a picture with brief about me,list skills/languages</p>
        </div>
      </div>

      <div class="carousel-item">
        <div class="container">
          <h1>Projects</h1>

          <!-- Project Showcase -->
          <div class="row align-items-center">
            <div class="col">
              <div class="card">
                <div class="card-body">
                  <h5 class="card-title">Project 1</h5>
                  <p class="cart-text">Project Info</p>
                </div>
              </div>
            </div>

            <div class="col">
              <div class="card">
                <div class="card-body">
                  <h5 class="card-title">Project 2</h5>
                  <p class="cart-text">Project Info</p>
                </div>
              </div>
            </div>
          </div>

          <div class="row align-items-center">
            <div class="col">
              <div class="card">
                <div class="card-body">
                  <h5 class="card-title">Project 3</h5>
                  <p class="cart-text">Project Info</p>
                </div>
              </div>
            </div>

            <div class="col">
              <div class="card">
                <div class="card-body">
                  <h5 class="card-title">Project 4</h5>
                  <p class="cart-text">Project Info</p>
                </div>
              </div>
            </div>
          </div>
          
        </div>
      </div>

  </div>

  <a class="carousel-control-prev" href="#myCarousel" role="button" data-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="sr-only">Previous</span>
  </a>
  <a class="carousel-control-next" href="#myCarousel" role="button" data-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div>

      <script src="app.js"></script>
      <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>
</html>

index.css 

@import url('https://fonts.googleapis.com/css?family=Raleway:200,100,400');

body {
    font-family: 'Raleway',sans-serif;
    height: 100%;
    color: #fff5f7;
    overflow: scroll;
}

.container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  padding: 0 3rem;
}

.intro-container {
  background: #ffb7c5;
  color: #fffce3;
  height: 100vh;
}

.carousel-item {
  background-color: #fff0f2;
  color: #805258;
  height: 100vh;
}

.box {
  background-color: #FFBEAB;
  margin: 60px;
  padding: 20px;
  margin: 20px;
}

.card {
  background-color: #FFBEAB;
  display: flex;
  margin: 80px;
  width: 20vh;
  height: 100%;
}

h1,h2 {
    font-weight: 200;  
    margin: 0.4rem;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 1.5rem;
}

/* Cursor Animation */
.txt-type > .txt {
  border-right: 0.2rem solid #fff5f7;
}

@media(min-width: 1200px) {
 h1 {
     font-size: 3rem;
 }
}

@media(max-width: 800px) {
    .container {
        padding: 0 1rem;
    }

    h1 {
        font-size: 1.5rem;
    }
}

@media(max-width: 500px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1rem;
    }
}

解决方法

您可以使用col-sm-6引导类使用make 4x4网格，它将在sm（如果需要，则为{xs）的屏幕尺寸下将其转换为1x4移动尺寸。

        .card-body {
            background-color: grey;
}
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">

    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css"
        integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous">

</head>

<body>

    <div class="container">

        <div class="row">
            <div id="carouselExampleControls" class="carousel slide" data-ride="carousel">
                <div class="carousel-inner">
                    <div class="carousel-item active">
                        <div class="row">
                            <div class="col-sm-6">
                                <div class="card">
                                    <div class="card-body">
                                        <h5 class="card-title">Special title treatment</h5>
                                        <p class="card-text">With supporting text below as a natural lead-in to
                                            additional content.</p>
                                        <a href="#" class="btn btn-primary">Go somewhere</a>
                                    </div>
                                </div>
                                <div class="card">
                                    <div class="card-body">
                                        <h5 class="card-title">Special title treatment</h5>
                                        <p class="card-text">With supporting text below as a natural lead-in to
                                            additional content.</p>
                                        <a href="#" class="btn btn-primary">Go somewhere</a>
                                    </div>
                                </div>
                            </div>
                            <div class="col-sm-6">
                                <div class="card">
                                    <div class="card-body">
                                        <h5 class="card-title">Special title treatment</h5>
                                        <p class="card-text">With supporting text below as a natural lead-in to
                                            additional content.</p>
                                        <a href="#" class="btn btn-primary">Go somewhere</a>
                                    </div>
                                </div>
                                <div class="card">
                                    <div class="card-body">
                                        <h5 class="card-title">Special title treatment</h5>
                                        <p class="card-text">With supporting text below as a natural lead-in to
                                            additional content.</p>
                                        <a href="#" class="btn btn-primary">Go somewhere</a>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                    <div class="carousel-item">
                        <div class="row">
                            <div class="col-sm-6">
                                <div class="card">
                                    <div class="card-body">
                                        <h5 class="card-title">Special title treatment</h5>
                                        <p class="card-text">With supporting text below as a natural lead-in to
                                            additional content.</p>
                                        <a href="#" class="btn btn-primary">Go somewhere</a>
                                    </div>
                                </div>
                                <div class="card">
                                    <div class="card-body">
                                        <h5 class="card-title">Special title treatment</h5>
                                        <p class="card-text">With supporting text below as a natural lead-in to
                                            additional content.</p>
                                        <a href="#" class="btn btn-primary">Go somewhere</a>
                                    </div>
                                </div>
                            </div>
                            <div class="col-sm-6">
                                <div class="card">
                                    <div class="card-body">
                                        <h5 class="card-title">Special title treatment</h5>
                                        <p class="card-text">With supporting text below as a natural lead-in to
                                            additional content.</p>
                                        <a href="#" class="btn btn-primary">Go somewhere</a>
                                    </div>
                                </div>
                                <div class="card">
                                    <div class="card-body">
                                        <h5 class="card-title">Special title treatment</h5>
                                        <p class="card-text">With supporting text below as a natural lead-in to
                                            additional content.</p>
                                        <a href="#" class="btn btn-primary">Go somewhere</a>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                    <div class="carousel-item">
                        <div class="row">
                            <div class="col-sm-6">
                                <div class="card">
                                    <div class="card-body">
                                        <h5 class="card-title">Special title treatment</h5>
                                        <p class="card-text">With supporting text below as a natural lead-in to
                                            additional content.</p>
                                        <a href="#" class="btn btn-primary">Go somewhere</a>
                                    </div>
                                </div>
                                <div class="card">
                                    <div class="card-body">
                                        <h5 class="card-title">Special title treatment</h5>
                                        <p class="card-text">With supporting text below as a natural lead-in to
                                            additional content.</p>
                                        <a href="#" class="btn btn-primary">Go somewhere</a>
                                    </div>
                                </div>
                            </div>
                            <div class="col-sm-6">
                                <div class="card">
                                    <div class="card-body">
                                        <h5 class="card-title">Special title treatment</h5>
                                        <p class="card-text">With supporting text below as a natural lead-in to
                                            additional content.</p>
                                        <a href="#" class="btn btn-primary">Go somewhere</a>
                                    </div>
                                </div>
                                <div class="card">
                                    <div class="card-body">
                                        <h5 class="card-title">Special title treatment</h5>
                                        <p class="card-text">With supporting text below as a natural lead-in to
                                            additional content.</p>
                                        <a href="#" class="btn btn-primary">Go somewhere</a>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
                <a class="carousel-control-prev" href="#carouselExampleControls" role="button" data-slide="prev">
                    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
                    <span class="sr-only">Previous</span>
                </a>
                <a class="carousel-control-next" href="#carouselExampleControls" role="button" data-slide="next">
                    <span class="carousel-control-next-icon" aria-hidden="true"></span>
                    <span class="sr-only">Next</span>
                </a>
            </div>
        </div>

    </div>

    <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"
        integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"
        crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js"
        integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN"
        crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"
        integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV"
        crossorigin="anonymous"></script>


</body>

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