Media Queries for Createing Responsive Layouts

how will it work:

Your code so far


<style>
  .item1 {
    background: LightSkyBlue;
    grid-area: header;
  }
  
  .item2 {
    background: LightSalmon;
    grid-area: advert;
  }
  
  .item3 {
    background: PaleTurquoise;
    grid-area: content;
  }
  
  .item4 {
    background: lightpink;
    grid-area: footer;
  }
  
  .container {
    font-size: 1.5em;
    min-height: 300px;
    width: 100%;
    background: LightGray;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 50px auto 1fr auto;
    grid-gap: 10px;
    grid-template-areas:
      "header"
      "advert"
      "content"
      "footer";
  }
  
  @media (min-width: 300px){
    .container{
      grid-template-columns: auto 1fr;
      grid-template-rows: auto 1fr auto;
      grid-template-areas:
        "advert header"
        "advert content"
        "advert footer";
    }
  }
  
  @media (min-width: 400px){
    .container{
      /* change the code below this line */
    
      grid-template-areas:
        "advert header top"
        "advert content"
        "advert footer bottom";
    
    /* change the code above this line */
    }
  }
</style>
  
<div class="container">
  <div class="item1">header</div>
  <div class="item2">advert</div>
  <div class="item3">content</div>
  <div class="item4">footer</div>
</div>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/responsive-web-design/css-grid/use-media-queries-to-create-responsive-layouts

@dhimanrama,

I noticed that in the media query you added an element with the label of top. No such element exists.

 grid-template-areas:
        "advert header top" <------
        "advert content"
        "advert footer bottom";

I would suggest you read the instructions again and review how areas are used in CSS Grid.

When the viewport width is 400px or more, make the header area occupy the top row completely and the footer area occupy the bottom row completely.