
Telefonlarda ise şöyle olsun istiyorum;

Bootstrap yada css ile nasıl yapabilirim ?
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Bootstrap Grid</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<style>
.grid-item {
border: 1px solid black;
text-align: center;
padding: 20px;
font-weight: bold;
background: #f0f0f0;
}
</style>
</head>
<body>
<div class="container">
<!-- Büyük ekranlar için düzen -->
<div class="row d-none d-md-flex">
<div class="col border text-center">1</div>
<div class="col border text-center">2</div>
<div class="col border text-center">3</div>
<div class="col border text-center">4</div>
<div class="col border text-center">5</div>
<div class="col border text-center">6</div>
<div class="col border text-center">7</div>
</div>
<!-- Telefonlar için düzen -->
<div class="row d-md-none">
<div class="col-3 grid-item">1</div>
<div class="col-3 grid-item">2</div>
<div class="col-3 grid-item">3</div>
<div class="col-3 grid-item">4</div>
<div class="col-3 grid-item">1</div>
<div class="col-3 grid-item">5</div>
<div class="col-3 grid-item">6</div>
<div class="col-3 grid-item">7</div>
</div>
</div>
</body>
</html> <style>
td {
border: 1px solid #000;
text-align: center;
vertical-align: middle;
}
th, td {
padding: 8px;
}
</style>
<table class="table">
<tbody>
<tr class="d-none d-lg-table-row">
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td>6</td>
<td>7</td>
</tr>
<tr class="d-lg-none">
<td rowspan="2">1</td>
<td>2</td>
<td>4</td>
<td>6</td>
</tr>
<tr class="d-lg-none">
<td rowspan="2">3</td>
<td>5</td>
<td>7</td>
</tr>
</tbody>
</table>