body {
    background-image : url(biomes-world_0.jpg);
    background-attachment: fixed;
    background-size: 100% 100%;
}
div#start{
    background-color: white;
    padding: 25px 50px;
    margin: 5px;
    border: dotted blue;
    max-height: 10%;
    max-width: 50%;
    
}
#pic1{
    max-height: 25%;
    max-width: 25%;
}