#treesvines-drawing {
    margin-top: 1em;
    text-align: center;
}
#treesvines-drawing img {
    /* /images/grafs/2011/treesvines.png */
    max-width: 600px;
    max-height: 443px;
}
@media only screen and (max-width: 650px) {
    #treesvines-drawing img {
        width: 100%;
        height: auto;
    }
}