.screenshot {
    width:145px;
    height:160px;
    float:left;
    border:1px solid #ddd;
    padding:12px;
    -webkit-border-radius:8px; 
    margin-right:12px;
    margin-bottom:12px;
    overflow:hidden;
}

.screenshot img {
    width:96px;
    height:138px;
}

.screenshot p {
    text-align:center;
}