body{
    font-family: 'Times New Roman', Times, serif;
    width: 800px;
    }
nav{
    width: 400px;
    margin: auto;
}
header{
    font-family: 'Times New Roman';
    text-align:center;
    color: blue;
    font-size:100px;
}
ul{
    padding: 20px;
    color: greenyellow;
    font-size: 20px;
}
li{
    color:blueviolet;
    font-size: 18px;
}
img{
    padding: 50px;
}