body {
    margin: 0;
    font-family: "Andika";
    font-size: 12pt;
    }
    
    header { 
    grid-area: header;
    background-color: #0DAAE7;
    height: 55px;
    }
    header a {
    text-decoration: none;
    }
    header img {
    position: absolute;
    top: 1%;
    left: 95%;
    }
    menu { 
    grid-area: menu; 
    padding-top: 20px;
    padding-left: 25px;
    width: 150px;
    margin-top: 0px;
    margin-bottom: 0px;
    }
    
    menu a {
    text-decoration: none;
    font-weight: bold;
    padding-top: 5px;
    }
    
    menu a:hover {
      color: #a12424;
    }
    main {
    grid-area: main; 
    padding: 10px 20px 10px 10px;
    }
    main a {
      text-decoration: none;
    }
  
    footer {
    grid-area: footer;
    text-align: center;
    height: 100%;
    }
    
    main p {
    font-size: 12pt;
    text-align: justify;
    text-indent: 10px;
    }
    
    menu a {
     display: block; 
    }
    h4 {
     font-size: 22pt;
font-weight: 800; 
margin: 4px 0px 4px 0px;
padding-left: 15px;
color: white;
letter-spacing: 3px;
    }
    h4 .logo {
    background-color: white;  
    color: #0DAAE7;
    border-radius: 5px;
    }
    h1 {
    font-size: 16pt;
    }
    
    h2 {
    font-size: 15pt;
    }
    
    h3 {
    font-size: 14pt;
    }
    
    .kod {
      font-size: 11pt;
      font-style: italic;
      line-height: 18px;
      background-color: #e5e5e5;
      color: #000000;
      padding: 10px;
      } 
    .lekce {
    margin-top: 15px;

    }    
    .lekce a {
    display: block;
    width: 250px;
    border: solid 1px white;
    padding: 2px 5px;
    background-color: #0DAAE7;
    border-radius: 5px;
    color: white;


    }

    .lekce a:hover {

    background-color: #e5e5e5;
    color: #000000;
    }
    summary {
      padding: 3px 3px;
      background-color: #0DAAE7;
      width: 60px;
      border-radius: 5px;
      color: white;
      list-style-type: none;
      text-align: center;
      }
    .grid-container {
    display: grid;
    grid-template-areas:
    'header header header header header'
    'menu main main main main'
    'footer footer footer footer footer';
    gap:  ;/*rozestup mezi areas*/
 
    padding: 0px 0px;
    }
    
    @media only screen and (max-width:800px) {
      .grid-container {
    display: grid;
    grid-template-areas:
    'header header header header header'
    'menu menu menu menu menu'
    'main main main main main'
    'footer footer footer footer footer';
    gap: 5px; /*rozestup mezi areas*/
    }
 
    menu {
      clear: both;
    width: 100%;
    padding: 2px;
    position: fixed;
    padding-top: 50px;
    background-color: white;
    }
    menu div {
      float: left;
      margin: 0px 12px 0px 12px;

    }
    header {
      width: 100%;
      position: fixed;
      z-index: 1;
    }
    header img {
      position: absolute;
    top: 2%;
    left: 90%;  
    }
    main {
      padding: 10px;
      margin-top: 50px;
    }
    main img {
      width: 90%;  
      }
    }