我开始学习引导程序,但由于某种原因,我在尝试创建网格时遇到了这个问题。我希望它看起来像这个图像,但是当我尝试添加左边距时它就会中断。我可以添加一个边距顶部没有问题,但是每当我水平将其放大一点时,它都会中断,并且从这里开始例如,每当我向任何元素添加"ml-2"时,这个。
这是我的 HTML:
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title>Tasca 21</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<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>
<link rel="stylesheet" href="css/master.css">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
</head>
<body>
<div class="container">
<div class="row">
<div class="col" id="top"></div>
</div>
<div class="row">
<div class="mt-2 col-lg-2 col-md-2 col-sm-3 xs-hidden" id="left"></div>
<div class="col-10">
<div class="row">
<div class="mt-2 col" id="top2"></div>
</div>
<div class="row" id="mid">
<div class="mt-2 col-lg-6 col-md-6 col-sm-12 col-xs-12"></div>
<div class="mt-2 col-lg-6 col-md-6 col-sm-12 col-xs-12"></div>
</div>
<div class="row" id="cubes">
<div class="mt-2 col-2"></div>
<div class="mt-2 col-2"></div>
<div class="mt-2 col-4"></div>
<div class="mt-2 col-2"></div>
<div class="mt-2 col-2"></div>
</div>
<div class="row" id="cubes">
<div class="mt-2 col-2"></div>
<div class="mt-2 col-2"></div>
<div class="mt-2 col-4"></div>
<div class="mt-2 col-2"></div>
<div class="mt-2 col-2"></div>
</div>
</div>
</div>
<div class="row">
<div class="col-12 mt-2" id="bottom"></div>
</div>
</div>
</body>
</html>
还有我的 CSS:
body {
margin: 5em;
}
#top {
background-color: #2ECC40;
height: 2em;
}
#bottom {
background-color: #2ECC40;
height: 1em;
}
#left {
background-color: #FF4136;
height: 14.5em;
}
#top2 {
background-color: #F012BE;
height: 2em;
}
#mid div {
background-color: #FF851B;
height: 5em;
}
#cubes div {
background-color: #0074D9;
height: 3em;
}
您的样式规则可能会与引导程序冲突。我建议你用自己的样式将你的行包装在一个div中,就像这样:
<div id="cubes">
<div class="row">
<div class="mt-2 col-2"></div>
<div class="mt-2 col-2"></div>
<div class="mt-2 col-4"></div>
<div class="mt-2 col-2"></div>
<div class="mt-2 col-2"></div>
</div>
</div>
这将消除可能的冲突
更改左/右边距将更改网格的工作方式,因为row
上的负边距与列上的填充(装订线(特别相关。
如果要更改列之间的间距,最好在列上使用填充,或在列的内容上使用边距,如此处所述。