ul.flickr{
    list-style-type: none;
    padding: 0;
}
ul.flickr li,
.widget ul.flickr li {
    width: auto;
    float: left;
    margin: 10px 10px 0 0;
}

ul.flickr a {
    display: block;
}
ul.flickr img {
    opacity:0.7;
    filter:alpha(opacity=70);
}
ul.flickr a:hover img{
    opacity:1;
    filter:alpha(opacity=100);
}
.clear{
    clear: both;
}