我用两列 对于每一个,我单独放置一行 当我将表单放在第二列中时,上一行的列之间的间距将被新列替换。 我要删除列之间的空间
需要删除col-3和下一行col-3中的空间。 我用来删除边距和填充,但是没用
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<code>
<div class="container">
<div class="row " >
<div class="col-3" >
<form class="form-group form-control">
<div class="input-group">
<div class="input-group-append">
<div class="input-group-text">@</div>
</div>
<input class="form-control" type="text" placeholder="نام
کاربری را وارد کنید">
</div>
<div class="input-group">
<div class="input-group-append">
<div class="input-group-text">@</div>
</div>
<input class="form-control" type="password"
placeholder="رمز عبور را وارد کنید">
</div>
<button class="btn btn-success" type="submit">ورود</button>
<input class="form-control" type="checkbox"> <label>فراموشی
رمز عبور</label>
</form>
</div>
<div class="col-9">
<form class="form-group">
<div class="form-control bg-dark">
<h3 class="text-center text-danger">ایجاد </h3>
<label class="text-white">عنوان</label>
<input class="form-control" type="text" size="50">
<label class="text-white">تستتتت</label>
<input class="form-control" type="number" size="20">
<button class="btn btn-success form-control"
type="submit">ایجاد</button>
<input type="radio"><label class="text-white" class="mr-
2">1</label>
<input type="radio"><label class="text-white" class="mr-
2">2</label>
</div>
</form>
</div>
</div>
<div class="row">
<div class="col-3">
<div class="card card-group">
<div class="card-body">
<div class="card-header text-center">
<h6>لیست</h6>
</div>
<div class="card-text">
<label class="text-success text-right">محمد</label>
<br>
<label class="text-success text-right">محمد</label>
<br>
<label class="text-success text-right">محمد</label>
<br>
<label class="text-success text-right">محمد</label>
<br>
<label class="text-success text-right">محمد</label>
<br>
</div>
</div>
</div>
</div>
<div class="col-9">
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</div>
<code>