Bootstrap 4.0 网格系统布局不工作

Question

我正在尝试使用 bootstrap 进行布局，但我无法弄清楚我做错了什么。我将两列 6 和第二列 6 我将 2 列 3 放在里面，但它不起作用。我是 bootstrap.

的新手

代码如下：

<!DOCTYPE html>
<html>
<head>
 <title></title>
 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
 <script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
 <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
 <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
 <style type="text/css">
 </style>
</head>
<body>
<div class="container-fluid">
 <div class="container">
  <div class="row">
   <div class="col-1 col-sm-1 col-md-1 col-xl-1" style="border-left: solid 1px #ffbfbf;">a</div>
   <div class="col-1 col-sm-1 col-md-1 col-xl-1" style="border-left: solid 1px #ffbfbf;">a</div>
   <div class="col-1 col-sm-1 col-md-1 col-xl-1" style="border-left: solid 1px #ffbfbf;">a</div>
   <div class="col-1 col-sm-1 col-md-1 col-xl-1" style="border-left: solid 1px #ffbfbf;">a</div>
   <div class="col-1 col-sm-1 col-md-1 col-xl-1" style="border-left: solid 1px #ffbfbf;">a</div>
   <div class="col-1 col-sm-1 col-md-1 col-xl-1" style="border-left: solid 1px #ffbfbf;">a</div>
   <div class="col-1 col-sm-1 col-md-1 col-xl-1" style="border-left: solid 1px #ffbfbf;">a</div>
   <div class="col-1 col-sm-1 col-md-1 col-xl-1" style="border-left: solid 1px #ffbfbf;">a</div>
   <div class="col-1 col-sm-1 col-md-1 col-xl-1" style="border-left: solid 1px #ffbfbf;">a</div>
   <div class="col-1 col-sm-1 col-md-1 col-xl-1" style="border-left: solid 1px #ffbfbf;">a</div>
   <div class="col-1 col-sm-1 col-md-1 col-xl-1" style="border-left: solid 1px #ffbfbf;">a</div>
   <div class="col-1 col-sm-1 col-md-1 col-xl-1" style="border-right: solid 1px #ffbfbf;border-left: solid 1px #ffbfbf;">a</div>
  </div>
 </div>
 <div class="container">
  <div class="row">
   <div class="col-12 col-sm-12 col-md-6 col-xl-6" style="border-left: solid 1px #ffbfbf;"><div style="height: 700px; background-color: #FF3355; border-radius: 15px;">a a a a a a</div></div>
   <div class="col-12 col-sm-12 col-md-6 col-xl-6" style="border-left: solid 1px #ffbfbf;">
    <div class="col-12 col-sm-12 col-md-6 col-xl-6" style="padding-right: 0px; padding-left:0px;border-left: solid 1px #ffbfbf;"><div style="height: 320px; background-color: #FF3355; border-radius: 15px;">a</div></div>
    <div class="col-12 col-sm-12 col-md-6 col-xl-6" style="padding-right: 0px; padding-left:0px;border-left: solid 1px #ffbfbf;"><div style="height: 320px; background-color: #FF3355; border-radius: 15px;">a</div></div>

    <div class="col-12 col-sm-12 col-md-6 col-xl-6" style="padding-right: 0px; padding-left:0px;border-left: solid 1px #ffbfbf;"><div style="height: 320px; background-color: #FF3355; border-radius: 15px;">a</div></div>
    <div class="col-12 col-sm-12 col-md-6 col-xl-6" style="padding-right: 0px; padding-left:0px;border-left: solid 1px #ffbfbf;"><div style="height: 320px; background-color: #FF3355; border-radius: 15px;">a</div></div>
   </div>

  </div>
 </div>
</div>
335
</body>
</html>

我想做什么：

我得到的：

Answer 1

您只是缺少基本的 Bootstrap "rule"。来自 docs..

In a grid layout, content must be placed within columns and only columns may be immediate children of rows.

在Bootstrap4,.col-是不是放在 .row 中 将垂直堆叠 。

https://www.codeply.com/go/GlA3IP7oGU

<div class="row">
    <div class="col-12 col-sm-12 col-md-6 col-xl-6" style="border-left: solid 1px #ffbfbf;">
        <div style="height: 700px; background-color: #FF3355; border-radius: 15px;">a a a a a a</div>
    </div>
    <div class="col-12 col-sm-12 col-md-6 col-xl-6" style="border-left: solid 1px #ffbfbf;">
        <div class="row">
            <div class="col-12 col-sm-12 col-md-6 col-xl-6" style="padding-right: 0px; padding-left:0px;border-left: solid 1px #ffbfbf;">
                <div style="height: 320px; background-color: #FF3355; border-radius: 15px;">a</div>
            </div>
            <div class="col-12 col-sm-12 col-md-6 col-xl-6" style="padding-right: 0px; padding-left:0px;border-left: solid 1px #ffbfbf;">
                <div style="height: 320px; background-color: #FF3355; border-radius: 15px;">a</div>
            </div>

            <div class="col-12 col-sm-12 col-md-6 col-xl-6" style="padding-right: 0px; padding-left:0px;border-left: solid 1px #ffbfbf;">
                <div style="height: 320px; background-color: #FF3355; border-radius: 15px;">a</div>
            </div>
            <div class="col-12 col-sm-12 col-md-6 col-xl-6" style="padding-right: 0px; padding-left:0px;border-left: solid 1px #ffbfbf;">
                <div style="height: 320px; background-color: #FF3355; border-radius: 15px;">a</div>
            </div>
        </div>
    </div>
</div>

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