body {
    display: grid;
    grid-template-columns: auto 120px; 
    max-width: 1024px;
    margin: 0px auto; 
}

header {
    grid-column-start: 1;
    grid-column-end: 3;
    grid-row-start:  1;
    grid-row-end: 2;
    }

nav {
    grid-column: 2 / 3;
    grid-row: 2 / 4;
    }

//span = rozpětí    
section {
    grid-column: 1 / span 1;  // 1 / 2
    grid-row: 2 / span 1;     // 2 / 3
    } 
    
footer {
    grid-column: 1 / 2;
    grid-row: 3 / 4;
    }       

header, nav, section, footer {
   border: 3px solid red; 
    }
    

table {
  border-collapse: collapse;
}

th, tr:nth-child(odd) {
  background-color: #DDDDDD;
}

td {
  text-align: center;
  width: 8%;
}

header h1  {
  font-family: calibri, arial, sans-serif;
  font-size: xx-large;  
  text-align: center; 
  color: white;
  background-color: black;
  margin:  0px;     
  padding: 10px 0px;
}

header h2  {
  font-family: calibri, arial, sans-serif;
  font-size: x-large;
  text-align: center; 
  color: white;
  background-color: black; 
  margin:  0px;  
  padding: 5px 0px;  
}

nav a{
  font-family: calibri, arial, sans-serif;
  background-color: black;
  color: white;
  text-decoration: none;
  padding: 2px 15px;
  margin:  2px;
  display: inline-block;
  width: 85px;
}

footer {
  font-family: calibri, arial, sans-serif;
  font-size: small;
  text-align: center; 
  color: white;
  background-color: black; 
  margin:  0px;  
  padding: 3px 0px; 
}