<main>
  <section class="post-list" data-count="6"><ul></ul></section>
</main>
<aside>
  <section class="post-list" data-count="4"><ul></ul></section>
</aside>
<template id="single-post">
  <li>
    <article class="post">
      <img>
      <div>
        <h2></h2>
        <p></p>
        <button></button>
      </div>
    </article>
  </li>
</template>

body {
  display: grid;
  grid-template-areas: "main aside";
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  
  height: 100%;
  box-sizing: border-box;
  padding: 20px;
  margin: 0;
  
  background: #1e1f22;
}

@media screen and (max-width: 767px) {
  body {
    grid-template-areas: "main" "aside" "footer";
    grid-template-columns: 1fr;
  }
}

main {
  grid-area: main;
}

aside {
  grid-area: aside;
}

.post-list {
  container: post-list / inline-size;
}

.post-list > ul {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 10px;
  
  padding: 0;
  margin: 0;
  
  list-style: none;
}

.post-list > ul > li {
  container: post-list-item / inline-size;
  
  padding: 10px;
  border-radius: 5px;
  
  background: #464646;
}

.post-list > ul > li > article {
  display: grid;
  grid-template-areas: "img text";
  grid-template-columns: 100px 1fr;
  gap: 5px;
}

.post-list > ul > li > article > img {
  grid-area: img;
  
  width: 100px;
  height: 100px;
  border-radius: 10px;
  
  background-color: #e6f4f1;
}

.post-list > ul > li > article > div {
  grid-area: text;
  
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.post-list > ul > li > article > div > h2 {
  height: 20px;
  border-radius: 5px;
  margin: 0;
  
  background: #21759b;
}

.post-list > ul > li > article > div > p {
  height: 60px;
  border-radius: 5px;
  margin: 0;
  
  background: #eee8a9;
}

.post-list > ul > li > article > div > button {
  width: 80px;
  height: 20px;
  border: none;
  border-radius: 5px;
  
  background: #00beff;
}

@container post-list-item (max-width: 400px) {
  .post-list > ul > li > article {
    display: flex;
    flex-direction: column;
  }
  
  .post-list > ul > li > article > img {
    width: 100%;
  }
}

@container post-list (max-width: 1500px) {
  .post-list > ul {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

@container post-list (max-width: 900px) {
  .post-list > ul {
    grid-template-columns: 1fr 1fr;
  }
}

@container post-list (max-width: 600px) {
  .post-list > ul {
    grid-template-columns: 1fr;
  }
}


















/*
body {
  display: grid;
  grid-template-areas: "main aside";
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  
  height: 100%;
  box-sizing: border-box;
  padding: 20px;
  margin: 0;
  
  background: #1e1f22;
  
  @media screen and (max-width: 767px) {
    grid-template-areas: "main" "aside" "footer";
    grid-template-columns: 1fr;
  }
}

main {
  grid-area: main;
}

aside {
  grid-area: aside;
}

.post-list {
  container: post-list / inline-size;
  
  > ul {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 10px;

    padding: 0;
    margin: 0;

    list-style: none;
    
    @container post-list (max-width: 1500px) {
      grid-template-columns: 1fr 1fr 1fr;
    }

    @container post-list (max-width: 900px) {
      grid-template-columns: 1fr 1fr;
    }

    @container post-list (max-width: 600px) {
      grid-template-columns: 1fr;
    }
    
    > li {
      container: post-list-item / inline-size;
  
      padding: 10px;
      border-radius: 5px;

      background: #464646;
      
      > article {
        display: grid;
        grid-template-areas: "img text";
        grid-template-columns: 100px 1fr;
        gap: 5px;
        
        @container post-list-item (max-width: 400px) {
          display: flex;
          flex-direction: column;
        }
        
        > img {
          grid-area: img;

          width: 100px;
          height: 100px;
          border-radius: 10px;

          background-color: #e6f4f1;
          
          @container post-list-item (max-width: 400px) {
              width: 100%;
          }
        }
        
        > div {
          grid-area: text;

          display: flex;
          flex-direction: column;
          gap: 5px;
     
          > h2 {
            height: 20px;
            border-radius: 5px;
            margin: 0;

            background: #21759b;
          }
          
          > p {
            height: 60px;
            border-radius: 5px;
            margin: 0;

            background: #eee8a9;
          }
          
          > button {
            width: 80px;
            height: 20px;
            border: none;
            border-radius: 5px;

            background: #00beff;
          }
        }
      }
    }
  }
}

jQuery( document ).ready( function() {
  let singlePost = jQuery( 'template#single-post' ).html();
  jQuery( '.post-list' ).each( function() {
    for ( let i = 0; i < jQuery( this ).data( 'count' ); i++ ) { 
      jQuery( this ).children( 'ul' ).append( singlePost ); 
    }
  } );
} );