* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
   }
 
html {
    font-family: oswald;
    font-size: 10px;
   }

/*nowa nawigacja*/ 

nav {
background-color: orangered;
padding: 25px 50px 25px 50px;  
/*margin: 20px 0px;*/
  }
  
nav ul {
    list-style: none;
  }
  
nav ul li {
    float: left;
    width: 50%;
  }
  
nav ul li a {
     display: block;
     margin-left: 2px;
     margin-bottom: 20px;
     border: 5px solid white;
     font-size: 33px;
     color: white;
     text-decoration: none;
     text-transform: none;
     text-align: center;
  }
  
nav ul li a:hover {
  color: yellow;
  border-color: yellow;
  }

@media (orientation: portrait) {

body nav {
    padding: 15px 25px 15px 25px;  
    /*margin: 20px 0px;*/
  }

body nav ul li a {
     display: block;
     margin-left: 2px;
     margin-bottom: 10px;
     border: 3px solid white;
     font-size: 20px;
  }
}


 body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
   }
 
    body h1 {
    flex-basis: 10vh;
    text-align: center;
    color: orangered;
    font-size: 50px;
    font-family: sans-serif;
    margin-top: 50px;
   }

   body p {
    margin-top: 30px;
    line-height: 1cm;
    text-align: center;
    text-transform: none;
    color: black;
    font-size: 40px;
    font-family: sans-serif;
   }

body section {
    /* jako element elastaczny */
    margin-top: 50px;
    margin-bottom: 50px;
    flex-grow: 1;
    /* kontener flex */
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    align-content: space-around;
   }
 
body section>div {
    flex-basis: 50%;
    padding: 15px;
   }
 
body section div img {
    width: 100%;
   }


@media (orientation: portrait) {
body {
    display: flex;
    flex-direction: column;
    min-height: 90vh;
   }

  body h1 {
    flex-basis: 10vh;
    font-size: 30px;
    margin-top: 35px;
    margin-bottom: 0;
    
   }
  body p {
    margin-top: 5px;
    line-height: 1cm;
    color: black;
    font-size: 20px;
   }
  body section {
    /* jako element elastaczny */
    margin-top: 10px;
    margin-bottom: 10px;
   }
  body section>div {
    flex-basis: 100%;
    padding: 15px;
   }
  body section div img {
width: 100%;
  }
}

 footer {
  background-color: orangered;
  width: 100%;
  padding: 15px 0px;
  margin-top: 0;
  margin-bottom: 0;
  margin-left: 0;
  margin-right: -50px;
  }
  
  footer p { 
  text-transform: none;
  font-size: 14px;
  text-align: left;
  line-height: 0.5cm;
  color: white;
  margin-top: 10px;
  margin-right: 20px;
  margin-left: 20px;
  }
  
  footer p i {
    text-transform: none;
  }
  
  footer p a {
   color: white;
   text-decoration: underline;
   text-transform: none;
  }
  
  footer p a:hover {
   color: yellow;
  }

@media (orientation: portrait) {
   footer {
  width: 100%;
  padding: 10px 0px;
  margin-top: 0;
  margin-bottom: 0;
  margin-left: 0;
  margin-right: -50px;
  }
  
  footer p { 
  font-size: 12px;
  margin-top: 10px;
  margin-right: 20px;
  margin-left: 20px;
  }
}