Need some help stuck at implementing Column Drop pattern

I have been trying to implement the column drop pattern from Google Responsive web design fundamentals. But couldn’t achieve it. I always find CSS to be difficult.

My output:

My Code:

Expected:
https://googlesamples.github.io/web-fundamentals/fundamentals/design-and-ux/responsive/column-drop.html

here’s a quick example i put together, there are other ways to do this too but this is one way that will get you the result you want

<!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>Document</title>
    <style>
      body {
        margin: 0;
      }
      .container {
        width: 100%;
        min-height: 200px;
        display: flex;
        flex-wrap: wrap;
      }
      .box1,
      .box3 {
        width: 20%;
        background: blue;
        height: 200px;
      }
      .box2 {
        width: 60%;
        background: rgb(50, 149, 230);
        height: 200px;
      }
      .box3 {
        background: rgb(13, 6, 116);
      }

      @media (max-width: 1024px) {
        .box1 {
          width: 30%;
        }
        .box2 {
          width: 70%;
        }
        .box3 {
          width: 100%;
        }
      }
      @media (max-width: 600px) {
        .box1,
        .box2,
        .box3 {
          width: 100%;
        }
      }
    </style>
  </head>
  <body>
    <div class="container">
      <div class="box1"></div>
      <div class="box2"></div>
      <div class="box3"></div>
    </div>
  </body>
</html>

Thank you for the response but it isn’t working,


Here is the code pen!

The expected behaviour is that dark blue one should be occupying a place beside blue since we have set flex-wrap: wrap but its not happening.

Thanks.

here is codepen example https://codepen.io/biscuitmanz/pen/eYOLMKz :slightly_smiling_face: