Css Flexbox:-
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Flex box</title>
</head>
<style>
.container{
border:1px solid black;
display: flex;
flex-wrap: wrap;
/* agar ek line hogi aur usko center lana hai to align-item center karte hai */
/* align-items: center; */
/* agar multiple line hogi to usko align content karte hai */
align-content: center;
/* direction warap ... flex flow */
flex-flow: row row-reverse;
height: 100vh;
/* row-gap: 12px;
column-gap: 12px; */
/*gap: row coloumn */
gap: 12px 12px;
}
.box{
height: 12px;
padding: 12px;
background-color: yellow;
width: 12px;
margin: 6px;
border: 1px solid black;
}
</style>
<body>
<div class="container">
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
<div class="box"></div>
</div>
</body>
</html>
Thanks you for commenting your questions. I will see question and respond you.