html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    background: black;
    font-size: 120%;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.4;
}
h1, h2, h3 {
    font-size: 3rem;
    font-weight: bold;
    text-align: center;
    padding: 2rem;
    margin: 0;
}
header, footer {
    margin-top: 1rem;
    padding: 2rem;
}
footer {
    display: flex;
    justify-content: center;
    align-items: center;    
    margin: 0;
    padding-bottom: 30px; 
}
section {
    margin: 0 3rem;
    text-align: justify;
    color: white;
}
.navi  {
    display: flex;
    justify-content: center;
    align-items: center;    
    margin: 0;
    padding-bottom: 30px; 
}
 a {
    color: white;
    text-decoration: none;
    display: block;
    font-weight: 800;
    padding: 2rem; 
  }
  a:hover {
    color: blue;
  }
  
  
  @media screen and (max-width: 530px) {
    main {
        display: block;
     }
   
    section {
        width: auto;
  }
}