*{
    margin: 0;
    padding: 0;
}
html{
    height: 100%;
}
body{
    height: 100%;
    background-image: url(wallpaper.jpg);
    background-size: cover;
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-position: center;

}
nav{

    background-color: white;

    box-shadow: 0px 2px 4px rgba(0, 0, 0, 0.114);
}
nav ul{
    float: right;
}
nav li{
    display: inline-block;
    margin-top: 30px;
    margin-right: 40px;
}
nav li a{
    font-family: Arial, Helvetica, sans-serif;
    font-size: 24px;
    color: #000000;
    text-decoration: none;
}
nav ul li .active{
    color: blue;
}
nav img{
    height: 45px;
    position: absolute;
    
}