body{
    font-family:arial,sans-serif;
    background-color:#888ba7;
    color:#000000;
}


header{
    background-color:rgb(0, 119, 255);
    color:rgb(255, 255, 255);
    padding: 20px;
    text-align:center;
}
nav{
    background-color:rgb(0, 0, 0);
    padding: 10px;
}


nav ul{list-style-type:none;
margin:0;
text-align:center;
}
nav ul li{
    display:inline;
    margin:0 10px;
}


nav ul li a{
    text-decoration:none;
    color:rgb(255, 255, 255);
    font-weight:bold;
}


nav ul li a:hover{
    color:blueviolet;
}


main{
    padding:20px;
}


h1,h2{
    color:black
}


strong{
    color:rgb(173, 3, 3)
}


table {
    width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  }
 
  table, th, td {
  border: 1px solid #000000;
  }
 
  th, td {
  padding: 10px;
  text-align: left;
  }
 
  th{
  background-color: #3080ca;
  }
 
  img{
    width: 400px;
  height: auto;
  margin: 20px 0;
  display: block;
  }
 
 
  footer a {
  color: #ff0000;
  text-decoration: none;
  }
  footer a:hover{
  text-decoration: underline;
  }