Property col-Xs does not work

Question

Property col-Xs does not work

Asked 6 years, 7 months ago

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1

I’m developing a website using Bootstrap and HTML, I’m gonna make you flexible
for the desktop and mobile platform. However, I cannot understand why the property
col-xs(phones) not work.

Follow the code snippet:

<!DOCTYPE html>
<html lang="pt">

<head>

  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  <meta name="description" content="">
  <meta name="author" content="">

  <title>test-Col.xs.md.lg</title>

  <!-- Custom fonts for this template -->
  <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">

  <link href="https://fonts.googleapis.com/css?family=Nunito:200,200i,300,300i,400,400i,600,600i,700,700i,800,800i,900,900i" rel="stylesheet">

  <!-- Custom styles for this template-->
  <link href="css/sb-admin-2.min.css" rel="stylesheet">

</head>

<body class="bg-gradient-primary">

  <div class="container">

    <div class="card o-hidden border-0 shadow-lg my-5">
      <div class="card-body p-0">
        <!-- Nested Row within Card Body -->
        <div class="row">
          <div class="col-lg-12 ">
            <div class="p-5">

              <form class="user">
                <div class="form-group row">
                  <div class="col-lg-6 col-md-2 col-xs-3">
                    <input type="password" class="form-control form-control-user" id="exampleInputPassword" placeholder="Password">
                  </div>
                  <div class="col-lg-6 col-md-10 col-xs-3">
                    <input type="password" class="form-control form-contr   pleRepeatPassword" placeholder="Repeat Password">
                  </div>
                </div>
                <a href="#" class="btn btn-primary btn-user btn-block">
                  Cadastrar
                </a>
                <hr>
              </form>
              <hr>
            </div>
          </div>
        </div>
      </div>
    </div>

  </div>

  <!-- Bootstrap core JavaScript-->
  <script src="vendor/jquery/jquery.min.js"></script>
  <script src="vendor/bootstrap/js/bootstrap.bundle.min.js"></script>

  <!-- Core plugin JavaScript-->
  <script src="vendor/jquery-easing/jquery.easing.min.js"></script>

  <!-- Custom scripts for all pages-->
  <script src="js/sb-admin-2.min.js"></script>

</body>

</html>

The Annexes below demonstrate the performance of the application in the following dimensions: lg(Arger desktops), md(desktops), Xs(phones).

Adaptation in lg:

Adaptation in md:

Adaptation in xs:

By placing code in both fields col-xs-3 I believe that in the third image, the fields should be laterally positioned.

Hunch: I believe that the reason the behavior in "Xs" is not happening, must be because of the tests I am running, simply reducing the size of the browser by clicking and dragging in the browser Vertice.

1 answer

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by hugocsl • **65,517** points · Answer 1 · 2019-03-19T09:33:28+00:00

Your problem is simpler than it seems, so you are indexing in your document the /bootstrap/4.3.1/. And the reason it doesn’t work is that the size XS only exists in Bootstrap 3, in Bootstrap 4 it does not exist and should be replaced only by col-n°.

Then see that your grid should only be with col-3 without the xs

Bootstrap 3: col-xs-3
Bootstrap 4: col-3

Bootstrap 4 Grid Size Options

In your case with you stated the div so without a size to -sm-:

<div class="col-lg-6 col-md-2 col-3">
<div class="col-lg-6 col-md-10 col-3">

Grid from medium screen size -md- changes the grid to col-3, if you want to control the size between 768px and 576px you need to put for example col-sm-4, or from -md- the grid already applies the col-3 below 768px

<div class="col-lg-6 col-md-2  col-sm-4 col-3">
<div class="col-lg-6 col-md-10 col-sm-8 col-3">

See the official Bootstrap 4 grid documentation https://getbootstrap.com/docs/4.0/layout/grid/#grid-options

Follow the adjusted code.

<link rel="stylesheet" type="text/css" media="screen" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.0/css/bootstrap.min.css" />

<body class="bg-gradient-primary">

  <div class="container">

    <div class="card o-hidden border-0 shadow-lg my-5">
      <div class="card-body p-0">
        <!-- Nested Row within Card Body -->
        <div class="row">
          <div class="col-lg-12 ">
            <div class="p-5">

              <form class="user">
                <div class="form-group row">
                  <div class="col-lg-6 col-md-2 col-3">
                    <input type="password" class="form-control form-control-user" id="exampleInputPassword" placeholder="Password">
                  </div>
                  <div class="col-lg-6 col-md-10 col-3">
                    <input type="password" class="form-control form-contr   pleRepeatPassword" placeholder="Repeat Password">
                  </div>
                </div>
                <a href="#" class="btn btn-primary btn-user btn-block">
                  Cadastrar
                </a>
                <hr>
              </form>
              <hr>
            </div>
          </div>
        </div>
      </div>
    </div>

  </div>