#map {
    width: 800px;
    height:400px;
    margin-right: auto;
    margin-left: auto;
    border: solid;
}

#message {
   text-align:center;
    width: 800px;
    height: auto;
    margin-right: auto;
    margin-left: auto;
    border: solid;
   
}
body {
    background-color: #b3ffb3;
    font-family: Arial,Verdana,sans-serif;
    
}

#DemoCanvas {
    margin: 100px;
}


.btn {
    background-color: DodgerBlue;
    border: none;
    color: white;
    padding: 12px 30px;
    cursor: pointer;
    font-size: 20px;
}