#nature_box {
    display: none;
    position: fixed;
    top:0;
    left:0;
    right:0;
    bottom:0;
    z-index: 500;
    background-color: rgba(0,0,0,0.5);
}

#nature_box div {
    padding: 15px;
    border-radius: 5px;
    background-color: #fff;
    margin: 2% auto;
    z-index: 500;
    max-width: 450px;
    overflow: hidden;
    -webkit-box-shadow: 0px 0px 15px 2px rgba(0,0,0,0.75);
    -moz-box-shadow: 0px 0px 15px 2px rgba(0,0,0,0.75);
    box-shadow: 0px 0px 15px 2px rgba(0,0,0,0.75);
}

#nature_box .image_holder {
    padding-bottom: 10px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

#nature_box p.description {
    float: left;
    color: #343434;
}

#nature_box p.attribution {
    position: absolute;
    color: #fff;
    background-color: #000;
}

#nature_box .close {
    float: right;
    margin-left: 5px;
}