Aula 26 - Loja Online - Django - Tutorial Bootstrap - Linhas e Colunas
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Rows e Columns - Linhas e Colunas
A forma como o
bootstrap enxerga o espaço no
browser é parecido com uma planilha.
Em uma planilha, você tem colunas de A, B, ..., Z, AA, AB, AC, ..., AZ ...e C ∞.
E linhas 1, 2, 3, ...∞
Apesar de parecido com uma planilha na analogia, o
bootstrap funciona um pouco diferente.
Colunas(col)
O
bootstrap funciona com um sistema de grade, por isso parece com uma planilha.
Esse sistema dele, permite até 12 colunas em uma página, não importa a largura da tela, ele sempre vai dividir o espaço em 12 pedaços.
É assim que ele formata o conteúdo na tela do browser.
Essas colunas podem ser usadas individualmente ou agrupadas.
Para agrupar as colunas, você precisa criar linhas.
Linha(row)
Para criar linhas, adicione uma div com class="row".
A quantidade de
linhas não importa.
Vamos em frente, criaremos uma linha(
row) dentro do dentro do
container em
/templates/bootstrap/example.html,dentro da
row criaremos uma coluna(
col) e dentro dessa
col colocaremos o
alert-primary.
/templates/bootstrap/example.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 CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<title>Bootstrap example</title>
</head>
<body>
<div class='container'>
<div class="row">
<div class="col">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
</div>
</div>
<div class='container-fluid'>
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
</body>
</html>
Com o servidor rodando acesse:
Veja que nada mudou, porque só temos uma coluna, por isso, ela ocupou os 12 pedaços da tela, ou seja, a tela inteira.
Vamos adicionar um
alert-secondary em uma segunda coluna na mesma linha para ver o que acontece.
/templates/bootstrap/example.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 CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<title>Bootstrap example</title>
</head>
<body>
<div class='container'>
<div class="row">
<div class="col">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
</div>
</div>
<div class='container-fluid'>
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
</body>
</html>
Com o servidor rodando acesse novamente:
Agora temos na primeira linha, duas colunas, uma com
alert-primary e a outra com um
alert-secondary.
A segunda linha com o
alert-secondary ocupando toda a tela é do
class='container-fluid'.
Agora vamos criar 12 colunas ao todo, iguais a essas que criamos, ou seja, 12 colunas alternadas:
alert-primary e
alert-secondary.
Vamos adicionar um
alert-secondary em uma segunda coluna na mesma linha para ver o que acontece.
/templates/bootstrap/example.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 CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<title>Bootstrap example</title>
</head>
<body>
<div class='container'>
<div class="row">
<div class="col">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
</div>
</div>
<div class='container-fluid'>
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
</body>
</html>
Acesse novamente:
Como não definimos o tamanho das colunas, ele fez uma formatação padrão.
As colunas podem ter tamanho de
1 a
12.
Vamos colocar todas as colunas com tamanho
1 para as
12 colunas ficarem na mesma linha.
/templates/bootstrap/example.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 CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<title>Bootstrap example</title>
</head>
<body>
<div class='container'>
<div class="row">
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
</div>
</div>
<div class='container-fluid'>
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
</body>
</html>
Acesse novamente:
Vamos adicionar
12 colunas no
container-fluid e ver a diferença do
container para o
container-fluid.
/templates/bootstrap/example.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 CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<title>Bootstrap example</title>
</head>
<body>
<div class='container'>
<div class="row">
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
</div>
</div>
<div class='container-fluid'>
<div class="row">
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
</div>
<div class="col-1">
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
</div>
</div>
</div>
<!-- Optional JavaScript -->
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
</body>
</html>
Acesse novamente:
É isso, ficamos por aqui.
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