body {
    margin: 0;
    font-family: Arial, sans-serif;
  }
   .container {
    display: grid;
    grid-template-areas:
      "header header"
      "nav nav"
      "main aside"
      "footer footer";
    grid-template-rows: auto auto 1fr auto;
    grid-template-columns: 3fr 1fr;
    height: 100vh;
  }
  
  header {
    grid-area: header;
    background-color: red;
    color: white;
    text-align: center;
    padding: 1rem;
  }
  
  nav {
    grid-area: nav;
    background-color: #000;
    display: flex;
    justify-content: space-around;
    align-items: center;
    color: white;
    padding: 0.5rem 0;
  }
   nav a {
    color: white;
    text-decoration: none;
  }
  
  main {
    grid-area: main;
    background-color: #ccc;
    padding: 1rem;
  }
  
  aside {
    grid-area: aside;
    background-color: #fff;
    padding: 1rem;
    border-left: 1px solid #ddd;
  }
  
  footer {
    grid-area: footer;
    background-color: red;
    color: white;
    text-align: center;
    padding: 1rem;
  }