.div-row{
  height: 100vh;
  display: grid;
  grid-template-areas:
          'header header header'
          'aside nav content'
          'footer footer footer'
  ;
  grid-template-columns: 1fr 3fr 2fr;
  grid-template-rows: 160px 1fr 80px;
}
nav img{
  height: 850px;
}