grid-areas.css

@media (max-width: 800px) {
  .footer {
  	grid-area: footer;
  }
  
  .head {
  	grid-area: head;
  }
  
  .container {
    grid-template-rows: 15px 1fr 75px 130px;
    grid-template-columns: 150px 1fr;
    
    grid-template-areas: 
      "head head"
      "rsidebar content"
      "content lsidebar"
      "footer footer";
  }

}