background: green;
text-align:center;
margin: 0 0 10px 10px;
}
.externalimage-holder img {
float: left;
margin: 0 0 10px 10px;
}
.externalimage-holder .caption {
position: absolute;
width: 100%;
height: auto;
bottom: -20px;
left: 0px;
color: #ffffff;
background: green;
text-align:center;
opacity:0.7;
margin: 0 0 10px 10px;
float: left;
}