.topnav{
    overflow:hidden;
    background-color: black;
    color:black;
    text-align:center;
    padding:0px 0px;
}
.topnav a {
    float:center;
    display:inline-block;
    text-align:center;
    padding:14px 16px;
}

.topnav a:hover{
    background-color:green;
    color:black;


}

nav ul li{
    display:inline-block;
    background-color:darkblue;
    margin:5px 5px;
    padding:5px 5px;
    border:solid black 1px;

}
#err{
    color:white;
    float:right;
}

#left{
    opacity: 0.5;
    float:left;
    text-align:left;
    padding: 100px 50px;
    margin: 10px 0px;
    color: green;
    background-color:white;
    height:200px;
}

#right
{
    float:right;
    text-align:center;
    color:white;
    margin:100px 200px;
    border-style:solid;
    padding: 10px 10px;
}

.wrapper
{
    border-style: solid;
    border-color:black;
}

body{
    background-image: url("https://drawingdatabase.com/wp-content/uploads/2014/10/Ford-Mustang-GT-2006.jpg");
}