Untitled

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Flex</title>
    <style>
        .container>div {
            background-color: #fff;
            margin: 10px;
            padding: 20px;
            font-size: 30px;
        }

        .container {
            display: flex;
            flex-direction: row-reverse;
            /* flex-direction: column-reverse; */
            flex-wrap: wrap-reverse;
            /* flex-wrap: nowrap; */
            justify-content: center;
            height: 300px;
            align-items: center;
            background-color: rgb(11, 170, 143);
        }
    </style>
</head>

<body>
    <div class="container">
        <div style="flex-grow: 6;">1</div>
        <div>2</div>
        <div>3</div>
        <div>4</div>
        <div>5</div>
        <div>6</div>
        <div>7</div>
        <div>8</div>
        <div>9</div>
        <div>10</div>
        <div>11</div>
        <div>12</div>
        <div>13</div>
        <div>14</div>
        <div>15</div>
    </div>
</body>

</html>