nav {
    background-color: rgb(255, 255, 255) ;
    width: 60%;
    height: 150px;
    margin-left: 20%;
    margin-top: 5%;
  
  }
  
  /* navigation bar from https://www.dtwf.club/css_navbar_horizontal.asp */
  
  ul {
    list-style-type: none;
    }
    
    li {
       float: left;
       }
       
       li a{
       display: block;
       color: black;
       text-align: center;
       font-size: 25px;
       text-align: center;
       text-decoration: none;
       padding-top: 5px;
       padding-left: 40px;
       }
      li a:hover {
      background-color: white; /*change text colour on hover*/
      }
      
      /* end of havbar */
     
      *{
  
     box-sizing: border-box;
  }
  
  body {
  font-family: Arial, Helvetica, sans-serif; background-color: black;
  }
  
    /* Style the header */
    header {
  padding: 30px;
  text-align: center;
  font-size: 35px;
  color: rgb(0, 0, 0);
  }
   
    main{
    
        
        width: 100%;
        height: 1000px;
        border: 1px aqua;
    }
    
  
    footer{
    margin-bottom: auto;
    background-color: grey;
    width: 100%;
    height: 80px;
    
    
    }
  
  .boxm{
  text-align: center;
  background-color: DodgerBlue;
  width: 60%;
  height: 3000px;
  margin-left: 20%;
  margin-right: 20%;
  float: left;
  
  }
  
  .boxp{
    margin-bottom: auto;
    text-align: left;
    background-color: rgb(0, 0, 0);
    width: 60%;
    height: 2300px;
    margin-left: 20%;
    float: left;
  
  }
  
  .boxright{
  text-align: center;
  background-color: Dodgerblue;
  width: 50%;
  float: left;
  height: 200px;
  }
   
  

  .boxleft {
  text-align: center;
  background-color: Dodgerblue;
  width: 50%;
  float: left;
  height: 200px;
  /*margin-left: 20%;*/
  
  }
  
 
  
  .boxleft2 {
    text-align: center;
    background-color: rgb(0, 0, 0);
    width: 50%;
    float: left;
    height: 200px;
    
    
    }
  
    .boxright2{
      text-align: center;
      background-color: rgb(0, 0, 0);
      width: 50%;
      float: left;
      height: 200px;
      }